$  This file was assembled from a variety of sources over time;
$  it just seeks to compile information for materials to be used in Monte Carlo 
$  particle transport calculations in an easily accessible plain-text format. 
$  The first 372 entries are from the Compendium of Material Composition Data for
$  Radiation Transport Modeling (Rev. 1), PNNL-15870 Rev. 1, published by the
$  Pacific Northwest National Laboratory.  That document can be found at:
$  https://www.pnnl.gov/main/publications/external/technical_reports/PNNL-15870Rev1.pdf
$  The sources for other entries are specified.

$************************************************************
$  1   : A-150 Tissue-Equivalent Plastic (A150TEP) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.127000 
$  Total atom density (atoms/b-cm) = 1.169E-01 
$  Composition by weight fraction 
M1         1001  -0.101327       $  H-1
           6000  -0.775501       $  C
           7014  -0.035057       $  N-14
           8016  -0.052316       $  O-16
           9019  -0.017422       $  F-19
          20000  -0.018378       $  Ca
$************************************************************

$************************************************************
$  2   : Acetone 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C3H6O 
$  Molecular weight (g/mole) = 58.07914 
$  Density (g/cm3) = 0.789900 
$  Total atom density (atoms/b-cm) = 8.190E-02 
$  Composition by weight fraction 
M2         1001  -0.104122       $  H-1
           6000  -0.620405       $  C
           8016  -0.275473       $  O-16
$************************************************************

$************************************************************
$  3   : Acetylene 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C2H2 
$  Molecular weight (g/mole) = 26.03728 
$  Density (g/cm3) = 0.001097 
$  Total atom density (atoms/b-cm) = 1.015E-04 
$  Composition by weight fraction 
M3         1001  -0.077418       $  H-1
           6000  -0.922582       $  C
$************************************************************

$************************************************************
$  4   : Air (dry, near sea level) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.001205 
$  Total atom density (atoms/b-cm) = 4.988E-05 
$  Composition by weight fraction 
M4         6000  -0.000124       $  C
           7014  -0.755268       $  N-14
           8016  -0.231781       $  O-16
          18000  -0.012827       $  Ar
$************************************************************

$************************************************************
$  5   : Alanine 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.420000 
$  Total atom density (atoms/b-cm) = 1.248E-01 
$  Composition by weight fraction 
M5         1001  -0.079190       $  H-1
           6000  -0.404439       $  C
           7014  -0.157213       $  N-14
           8016  -0.359159       $  O-16
$************************************************************

$************************************************************
$  6   : Aluminum 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Al 
$  Molecular weight (g/mole) = 26.981538 
$  Density (g/cm3) = 2.698900 
$  Total atom density (atoms/b-cm) = 6.024E-02 
$  Composition by weight fraction 
M6        13027  -1.000000       $  Al-27
$************************************************************

$************************************************************
$  7   : Aluminum Oxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Al2O3 
$  Molecular weight (g/mole) = 101.961276 
$  Density (g/cm3) = 3.970000 
$  Total atom density (atoms/b-cm) = 1.172E-01 
$  Composition by weight fraction 
M7         8016  -0.470749       $  O-16
          13027  -0.529251       $  Al-27
$************************************************************

$************************************************************
$  8   : Aluminum, alloy 2024-O 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.780000 
$  Total atom density (atoms/b-cm) = 6.022E-02 
$  Composition by weight fraction 
M8        12000  -0.015000       $  Mg
          13027  -0.927000       $  Al-27
          14000  -0.002830       $  Si
          22000  -0.000850       $  Ti
          24000  -0.000570       $  Cr
          25055  -0.006000       $  Mn-55
          26000  -0.002830       $  Fe
          29000  -0.043500       $  Cu
          30000  -0.001420       $  Zn
$************************************************************

$************************************************************
$  9   : Aluminum, alloy 2090-T83 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.590000 
$  Total atom density (atoms/b-cm) = 6.054E-02 
$  Composition by weight fraction 
M9         3000  -0.022500       $  Li
          12000  -0.001630       $  Mg
          13027  -0.944000       $  Al-27
          14000  -0.000650       $  Si
          22000  -0.000980       $  Ti
          24000  -0.000330       $  Cr
          25055  -0.000330       $  Mn-55
          26000  -0.000780       $  Fe
          29000  -0.027000       $  Cu
          30000  -0.000650       $  Zn
          40000  -0.001150       $  Zr
$************************************************************

$************************************************************
$  10  : Aluminum, alloy 3003 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.730000 
$  Total atom density (atoms/b-cm) = 6.035E-02 
$  Composition by weight fraction 
M10       13027  -0.978500       $  Al-27
          14000  -0.003320       $  Si
          25055  -0.012500       $  Mn-55
          26000  -0.003880       $  Fe
          29000  -0.001250       $  Cu
          30000  -0.000550       $  Zn
$************************************************************

$************************************************************
$  11  : Aluminum, alloy 4043-O 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.690000 
$  Total atom density (atoms/b-cm) = 5.966E-02 
$  Composition by weight fraction 
M11        4009  -0.000005       $  Be-9
          12000  -0.000280       $  Mg
          13027  -0.939000       $  Al-27
          14000  -0.052500       $  Si
          22000  -0.001130       $  Ti
          25055  -0.000280       $  Mn-55
          26000  -0.004530       $  Fe
          29000  -0.001700       $  Cu
          30000  -0.000570       $  Zn
$************************************************************

$************************************************************
$  12  : Aluminum, alloy 5086-O 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.660000 
$  Total atom density (atoms/b-cm) = 5.928E-02 
$  Composition by weight fraction 
M12       12000  -0.040000       $  Mg
          13027  -0.946500       $  Al-27
          14000  -0.002140       $  Si
          22000  -0.000800       $  Ti
          24000  -0.001500       $  Cr
          25055  -0.004500       $  Mn-55
          26000  -0.002680       $  Fe
          29000  -0.000540       $  Cu
          30000  -0.001340       $  Zn
$************************************************************

$************************************************************
$  13  : Aluminum, alloy 6061-O 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.700000 
$  Total atom density (atoms/b-cm) = 5.993E-02 
$  Composition by weight fraction 
M13       12000  -0.010000       $  Mg
          13027  -0.972000       $  Al-27
          14000  -0.006000       $  Si
          22000  -0.000880       $  Ti
          24000  -0.001950       $  Cr
          25055  -0.000880       $  Mn-55
          26000  -0.004090       $  Fe
          29000  -0.002750       $  Cu
          30000  -0.001460       $  Zn
$************************************************************

$************************************************************
$  14  : Aluminum, alloy 7075-O 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.810000 
$  Total atom density (atoms/b-cm) = 5.999E-02 
$  Composition by weight fraction 
M14       12000  -0.025000       $  Mg
          13027  -0.892500       $  Al-27
          14000  -0.002340       $  Si
          22000  -0.001170       $  Ti
          24000  -0.002300       $  Cr
          25055  -0.001760       $  Mn-55
          26000  -0.002930       $  Fe
          29000  -0.016000       $  Cu
          30000  -0.056000       $  Zn
$************************************************************

$************************************************************
$  15  : Ammonia (liquid at T= -79 C) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = NH3 
$  Molecular weight (g/mole) = 17.03052 
$  Density (g/cm3) = 0.771000 
$  Total atom density (atoms/b-cm) = 1.091E-01 
$  Composition by weight fraction 
M15        1001  -0.177547       $  H-1
           7014  -0.822453       $  N-14
$************************************************************

$************************************************************
$  16  : Anthracene 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C14H10 
$  Molecular weight (g/mole) = 178.2292 
$  Density (g/cm3) = 1.250000 
$  Total atom density (atoms/b-cm) = 1.014E-01 
$  Composition by weight fraction 
M16        1001  -0.056553       $  H-1
           6000  -0.943447       $  C
$************************************************************

$************************************************************
$  17  : Argon 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Ar 
$  Molecular weight (g/mole) = 39.948 
$  Density (g/cm3) = 0.001662 
$  Total atom density (atoms/b-cm) = 2.505E-05 
$  Composition by weight fraction 
M17       18000  -1.000000       $  Ar
$************************************************************

$************************************************************
$  18  : Asphalt 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.300000 
$  Total atom density (atoms/b-cm) = 1.373E-01 
$  Composition by weight fraction 
M18        1001  -0.103725       $  H-1
           6000  -0.848050       $  C
           7014  -0.006050       $  N-14
           8016  -0.004050       $  O-16
          16000  -0.037700       $  S
          23000  -0.000393       $  V
          28000  -0.000034       $  Ni
$************************************************************

$************************************************************
$  19  : Asphalt pavement 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.578400 
$  Total atom density (atoms/b-cm) = 8.943E-02 
$  Composition by weight fraction 
M19        1001  -0.007781       $  H-1
           6000  -0.076175       $  C
           7014  -0.000363       $  N-14
           8016  -0.459103       $  O-16
          11023  -0.011659       $  Na-23
          12000  -0.021757       $  Mg
          13027  -0.051009       $  Al-27
          14000  -0.231474       $  Si
          16000  -0.002804       $  S
          19000  -0.017058       $  K
          20000  -0.084471       $  Ca
          22000  -0.003403       $  Ti
          23000  -0.000024       $  V
          25055  -0.000362       $  Mn-55
          26000  -0.031375       $  Fe
          28000  -0.000002       $  Ni
          82000  -0.001179       $  Pb
$************************************************************

$************************************************************
$  20  : Bakelite 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.250000 
$  Total atom density (atoms/b-cm) = 9.935E-02 
$  Composition by weight fraction 
M20        1001  -0.057444       $  H-1
           6000  -0.774589       $  C
           8016  -0.167968       $  O-16
$************************************************************

$************************************************************
$  21  : Barium Fluoride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = BaF2 
$  Molecular weight (g/mole) = 175.3238064 
$  Density (g/cm3) = 4.890000 
$  Total atom density (atoms/b-cm) = 5.039E-02 
$  Composition by weight fraction 
M21        9019  -0.216720       $  F-19
          56000  -0.783280       $  Ba
$************************************************************

$************************************************************
$  22  : Barium sulfate 
$  Source = PNNL-15870 Rev. 1 
$  Formula = BaSO4 
$  Molecular weight (g/mole) = 233.3896 
$  Density (g/cm3) = 4.500000 
$  Total atom density (atoms/b-cm) = 6.967E-02 
$  Composition by weight fraction 
M22        8016  -0.274212       $  O-16
          16000  -0.137368       $  S
          56000  -0.588420       $  Ba
$************************************************************

$************************************************************
$  23  : Benzene 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C6H6 
$  Molecular weight (g/mole) = 78.11184 
$  Density (g/cm3) = 0.876500 
$  Total atom density (atoms/b-cm) = 8.109E-02 
$  Composition by weight fraction 
M23        1001  -0.077418       $  H-1
           6000  -0.922582       $  C
$************************************************************

$************************************************************
$  24  : Beryllium 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Be 
$  Molecular weight (g/mole) = 9.012182 
$  Density (g/cm3) = 1.848000 
$  Total atom density (atoms/b-cm) = 1.235E-01 
$  Composition by weight fraction 
M24        4009  -1.000000       $  Be-9
$************************************************************

$************************************************************
$  25  : Beryllium Carbide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Be2C 
$  Molecular weight (g/mole) = 30.035064 
$  Density (g/cm3) = 1.900000 
$  Total atom density (atoms/b-cm) = 1.143E-01 
$  Composition by weight fraction 
M25        4009  -0.600111       $  Be-9
           6000  -0.399889       $  C
$************************************************************

$************************************************************
$  26  : Beryllium Oxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = BeO 
$  Molecular weight (g/mole) = 25.011582 
$  Density (g/cm3) = 3.010000 
$  Total atom density (atoms/b-cm) = 1.449E-01 
$  Composition by weight fraction 
M26        4009  -0.360320       $  Be-9
           8016  -0.639680       $  O-16
$************************************************************

$************************************************************
$  27  : Bismuth 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Bi 
$  Molecular weight (g/mole) = 208.98038 
$  Density (g/cm3) = 9.747000 
$  Total atom density (atoms/b-cm) = 2.809E-02 
$  Composition by weight fraction 
M27       83209  -1.000000       $  Bi-209
$************************************************************

$************************************************************
$  28  : Bismuth Germanate (BGO) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Bi4Ge3O12 
$  Molecular weight (g/mole) = 1245.83432 
$  Density (g/cm3) = 7.130000 
$  Total atom density (atoms/b-cm) = 6.548E-02 
$  Composition by weight fraction 
M28        8016  -0.154126       $  O-16
          32000  -0.174820       $  Ge
          83209  -0.671054       $  Bi-209
$************************************************************

$************************************************************
$  29  : Blood (ICRP) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.060000 
$  Total atom density (atoms/b-cm) = 1.017E-01 
$  Composition by weight fraction 
M29        1001  -0.101866       $  H-1
           6000  -0.100020       $  C
           7014  -0.029640       $  N-14
           8016  -0.759414       $  O-16
          11023  -0.001850       $  Na-23
          12000  -0.000040       $  Mg
          14000  -0.000030       $  Si
          15031  -0.000350       $  P-31
          16000  -0.001850       $  S
          17000  -0.002780       $  Cl
          19000  -0.001630       $  K
          20000  -0.000060       $  Ca
          26000  -0.000460       $  Fe
          30000  -0.000010       $  Zn
$************************************************************

$************************************************************
$  30  : Bone Equivalent Plastic, B-100 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.450000 
$  Total atom density (atoms/b-cm) = 1.104E-01 
$  Composition by weight fraction 
M30        1001  -0.065471       $  H-1
           6000  -0.536945       $  C
           7014  -0.021500       $  N-14
           8016  -0.032085       $  O-16
           9019  -0.167411       $  F-19
          20000  -0.176589       $  Ca
$************************************************************

$************************************************************
$  31  : Bone Equivalent Plastic, B-110 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.785000 
$  Total atom density (atoms/b-cm) = 9.798E-02 
$  Composition by weight fraction 
M31        1001  -0.035500       $  H-1
           6000  -0.367300       $  C
           7014  -0.039700       $  N-14
           8016  -0.045300       $  O-16
           9019  -0.249300       $  F-19
          20000  -0.262900       $  Ca
$************************************************************

$************************************************************
$  32  : Bone, Compact (ICRU) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.850000 
$  Total atom density (atoms/b-cm) = 1.340E-01 
$  Composition by weight fraction 
M32        1001  -0.063984       $  H-1
           6000  -0.278000       $  C
           7014  -0.027000       $  N-14
           8016  -0.410016       $  O-16
          12000  -0.002000       $  Mg
          15031  -0.070000       $  P-31
          16000  -0.002000       $  S
          20000  -0.147000       $  Ca
$************************************************************

$************************************************************
$  33  : Bone, Cortical (ICRP) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.850000 
$  Total atom density (atoms/b-cm) = 1.098E-01 
$  Composition by weight fraction 
M33        1001  -0.047234       $  H-1
           6000  -0.144330       $  C
           7014  -0.041990       $  N-14
           8016  -0.446096       $  O-16
          12000  -0.002200       $  Mg
          15031  -0.104970       $  P-31
          16000  -0.003150       $  S
          20000  -0.209930       $  Ca
          30000  -0.000100       $  Zn
$************************************************************

$************************************************************
$  34  : Boral (65% Al-35% B4C) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.530000 
$  Total atom density (atoms/b-cm) = 8.496E-02 
$  Composition by weight fraction 
M34        5000  -0.274000       $  B
           6000  -0.076000       $  C
          13027  -0.650000       $  Al-27
$************************************************************

$************************************************************
$  35  : Boral (Aluminum 10% boron alloy) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.600000 
$  Total atom density (atoms/b-cm) = 6.647E-02 
$  Composition by weight fraction 
M35        5000  -0.100000       $  B
          11023  -0.005000       $  Na-23
          13027  -0.879000       $  Al-27
          14000  -0.002500       $  Si
          19000  -0.010000       $  K
          22000  -0.000500       $  Ti
          26000  -0.003000       $  Fe
$************************************************************

$************************************************************
$  36  : Boral (Aluminum 5% boron alloy) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.600000 
$  Total atom density (atoms/b-cm) = 6.213E-02 
$  Composition by weight fraction 
M36        5000  -0.050000       $  B
          11023  -0.005000       $  Na-23
          13027  -0.929500       $  Al-27
          14000  -0.002000       $  Si
          19000  -0.010000       $  K
          22000  -0.000500       $  Ti
          26000  -0.003000       $  Fe
$************************************************************

$************************************************************
$  37  : Borax 
$  Source = PNNL-15870 Rev. 1 
$  Formula = NA2B4O7-10(H2O) 
$  Molecular weight (g/mole) = 381.37214 
$  Density (g/cm3) = 1.730000 
$  Total atom density (atoms/b-cm) = 1.175E-01 
$  Composition by weight fraction 
M37        1001  -0.052859       $  H-1
           5000  -0.113391       $  B
           8016  -0.713187       $  O-16
          11023  -0.120563       $  Na-23
$************************************************************

$************************************************************
$  38  : Boric Acid 
$  Source = PNNL-15870 Rev. 1 
$  Formula = H3BO3 
$  Molecular weight (g/mole) = 61.83302 
$  Density (g/cm3) = 1.500000 
$  Total atom density (atoms/b-cm) = 1.023E-01 
$  Composition by weight fraction 
M38        1001  -0.048903       $  H-1
           5000  -0.174842       $  B
           8016  -0.776255       $  O-16
$************************************************************

$************************************************************
$  39  : Boron 
$  Source = PNNL-15870 Rev. 1 
$  Formula = B 
$  Molecular weight (g/mole) = 10.811 
$  Density (g/cm3) = 2.370000 
$  Total atom density (atoms/b-cm) = 1.320E-01 
$  Composition by weight fraction 
M39        5000  -1.000000       $  B
$************************************************************

$************************************************************
$  40  : Boron Carbide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = B4C 
$  Molecular weight (g/mole) = 55.2547 
$  Density (g/cm3) = 2.520000 
$  Total atom density (atoms/b-cm) = 1.373E-01 
$  Composition by weight fraction 
M40        5000  -0.782610       $  B
           6000  -0.217390       $  C
$************************************************************

$************************************************************
$  41  : Boron Fluoride (B2F4) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = B2F4 
$  Molecular weight (g/mole) = 97.6156128 
$  Density (g/cm3) = 0.004058 
$  Total atom density (atoms/b-cm) = 1.502E-04 
$  Composition by weight fraction 
M41        5000  -0.221501       $  B
           9019  -0.778499       $  F-19
$************************************************************

$************************************************************
$  42  : Boron Fluoride (BF3) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = BF3 
$  Molecular weight (g/mole) = 67.8062096 
$  Density (g/cm3) = 0.002831 
$  Total atom density (atoms/b-cm) = 1.006E-04 
$  Composition by weight fraction 
M42        5000  -0.159440       $  B
           9019  -0.840560       $  F-19
$************************************************************

$************************************************************
$  43  : Boron Oxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = B2O3 
$  Molecular weight (g/mole) = 69.6202 
$  Density (g/cm3) = 1.812000 
$  Total atom density (atoms/b-cm) = 7.837E-02 
$  Composition by weight fraction 
M43        5000  -0.310551       $  B
           8016  -0.689449       $  O-16
$************************************************************

$************************************************************
$  44  : Brain (ICRP) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.030000 
$  Total atom density (atoms/b-cm) = 1.040E-01 
$  Composition by weight fraction 
M44        1001  -0.110667       $  H-1
           6000  -0.125420       $  C
           7014  -0.013280       $  N-14
           8016  -0.737723       $  O-16
          11023  -0.001840       $  Na-23
          12000  -0.000150       $  Mg
          15031  -0.003540       $  P-31
          16000  -0.001770       $  S
          17000  -0.002360       $  Cl
          19000  -0.003100       $  K
          20000  -0.000090       $  Ca
          26000  -0.000050       $  Fe
          30000  -0.000010       $  Zn
$************************************************************

$************************************************************
$  45  : Brass (typical composition) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 8.070000 
$  Total atom density (atoms/b-cm) = 7.540E-02 
$  Composition by weight fraction 
M45       26000  -0.000868       $  Fe
          29000  -0.665381       $  Cu
          30000  -0.325697       $  Zn
          50000  -0.002672       $  Sn
          82000  -0.005377       $  Pb
$************************************************************

$************************************************************
$  46  : Brick, Common Silica 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.800000 
$  Total atom density (atoms/b-cm) = 5.361E-02 
$  Composition by weight fraction 
M46        8016  -0.525000       $  O-16
          13027  -0.005000       $  Al-27
          14000  -0.449000       $  Si
          20000  -0.014000       $  Ca
          26000  -0.007000       $  Fe
$************************************************************

$************************************************************
$  47  : Brick, Fire 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.100000 
$  Total atom density (atoms/b-cm) = 6.174E-02 
$  Composition by weight fraction 
M47        8016  -0.497000       $  O-16
          12000  -0.006000       $  Mg
          13027  -0.212000       $  Al-27
          14000  -0.252000       $  Si
          20000  -0.007000       $  Ca
          22000  -0.012000       $  Ti
          26000  -0.014000       $  Fe
$************************************************************

$************************************************************
$  48  : Brick, Kaolin (white) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.100000 
$  Total atom density (atoms/b-cm) = 6.221E-02 
$  Composition by weight fraction 
M48        8016  -0.500318       $  O-16
          12000  -0.001205       $  Mg
          13027  -0.240568       $  Al-27
          14000  -0.242823       $  Si
          20000  -0.000714       $  Ca
          22000  -0.010179       $  Ti
          26000  -0.004192       $  Fe
$************************************************************

$************************************************************
$  49  : Bronze (typical composition) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 8.400000 
$  Total atom density (atoms/b-cm) = 8.152E-02 
$  Composition by weight fraction 
M49       13027  -0.028528       $  Al-27
          14000  -0.003339       $  Si
          25055  -0.003555       $  Mn-55
          26000  -0.010208       $  Fe
          28000  -0.006718       $  Ni
          29000  -0.874157       $  Cu
          30000  -0.036037       $  Zn
          50000  -0.024503       $  Sn
          82000  -0.012957       $  Pb
$************************************************************

$************************************************************
$  50  : C-552 Air-Equivalent Plastic 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.760000 
$  Total atom density (atoms/b-cm) = 9.662E-02 
$  Composition by weight fraction 
M50        1001  -0.024680       $  H-1
           6000  -0.501610       $  C
           8016  -0.004527       $  O-16
           9019  -0.465209       $  F-19
          14000  -0.003973       $  Si
$************************************************************

$************************************************************
$  51  : Cadmium 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Cd 
$  Molecular weight (g/mole) = 112.411 
$  Density (g/cm3) = 8.650000 
$  Total atom density (atoms/b-cm) = 4.634E-02 
$  Composition by weight fraction 
M51       48000  -1.000000       $  Cd
$************************************************************

$************************************************************
$  52  : Cadmium Nitrate Tetrahydrate 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Cd(NO3)2-4(H2O) 
$  Molecular weight (g/mole) = 308.48192 
$  Density (g/cm3) = 2.450000 
$  Total atom density (atoms/b-cm) = 1.004E-01 
$  Composition by weight fraction 
M52        1001  -0.026139       $  H-1
           7014  -0.090811       $  N-14
           8016  -0.518650       $  O-16
          48000  -0.364401       $  Cd
$************************************************************

$************************************************************
$  53  : Cadmium Telluride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = CdTe 
$  Molecular weight (g/mole) = 240.011 
$  Density (g/cm3) = 6.200000 
$  Total atom density (atoms/b-cm) = 3.111E-02 
$  Composition by weight fraction 
M53       48000  -0.468355       $  Cd
          52000  -0.531645       $  Te
$************************************************************

$************************************************************
$  54  : Cadmium Tungstate (CWO) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = CdWO4 
$  Molecular weight (g/mole) = 360.2486 
$  Density (g/cm3) = 7.900000 
$  Total atom density (atoms/b-cm) = 7.924E-02 
$  Composition by weight fraction 
M54        8016  -0.177644       $  O-16
          48000  -0.312027       $  Cd
          74000  -0.510329       $  W
$************************************************************

$************************************************************
$  55  : Calcium Carbonate 
$  Source = PNNL-15870 Rev. 1 
$  Formula = CaCO3 
$  Molecular weight (g/mole) = 100.0869 
$  Density (g/cm3) = 2.800000 
$  Total atom density (atoms/b-cm) = 8.424E-02 
$  Composition by weight fraction 
M55        6000  -0.120003       $  C
           8016  -0.479554       $  O-16
          20000  -0.400443       $  Ca
$************************************************************

$************************************************************
$  56  : Calcium Fluoride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = CaF2 
$  Molecular weight (g/mole) = 78.0748064 
$  Density (g/cm3) = 3.180000 
$  Total atom density (atoms/b-cm) = 7.358E-02 
$  Composition by weight fraction 
M56        9019  -0.486659       $  F-19
          20000  -0.513341       $  Ca
$************************************************************

$************************************************************
$  57  : Calcium Oxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = CaO 
$  Molecular weight (g/mole) = 56.0774 
$  Density (g/cm3) = 3.300000 
$  Total atom density (atoms/b-cm) = 7.088E-02 
$  Composition by weight fraction 
M57        8016  -0.285299       $  O-16
          20000  -0.714701       $  Ca
$************************************************************

$************************************************************
$  58  : Calcium Sulfate 
$  Source = PNNL-15870 Rev. 1 
$  Formula = CaSO4 
$  Molecular weight (g/mole) = 136.1406 
$  Density (g/cm3) = 2.960000 
$  Total atom density (atoms/b-cm) = 7.856E-02 
$  Composition by weight fraction 
M58        8016  -0.470095       $  O-16
          16000  -0.235497       $  S
          20000  -0.294408       $  Ca
$************************************************************

$************************************************************
$  59  : Carbon Dioxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = CO2 
$  Molecular weight (g/mole) = 44.0095 
$  Density (g/cm3) = 0.001842 
$  Total atom density (atoms/b-cm) = 7.562E-05 
$  Composition by weight fraction 
M59        6000  -0.272912       $  C
           8016  -0.727088       $  O-16
$************************************************************

$************************************************************
$  60  : Carbon Tetrachloride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = CCl4 
$  Molecular weight (g/mole) = 153.8227 
$  Density (g/cm3) = 1.594000 
$  Total atom density (atoms/b-cm) = 3.120E-02 
$  Composition by weight fraction 
M60        6000  -0.078083       $  C
          17000  -0.921917       $  Cl
$************************************************************

$************************************************************
$  61  : Carbon, Activated 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C 
$  Density (g/cm3) = 0.320000 
$  Total atom density (atoms/b-cm) = 1.604E-02 
$  Composition by weight fraction 
M61        5000  -0.000001       $  B
           6000  -0.999999       $  C
$************************************************************

$************************************************************
$  62  : Carbon, Amorphous 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C 
$  Density (g/cm3) = 2.000000 
$  Total atom density (atoms/b-cm) = 1.003E-01 
$  Composition by weight fraction 
M62        5000  -0.000001       $  B
           6000  -0.999999       $  C
$************************************************************

$************************************************************
$  63  : Carbon, Graphite (reactor grade) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C 
$  Density (g/cm3) = 1.700000 
$  Total atom density (atoms/b-cm) = 8.524E-02 
$  Composition by weight fraction 
M63        5000  -0.000001       $  B
           6000  -0.999999       $  C
$************************************************************

$************************************************************
$  64  : Cat litter (clumping) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Na0.2Ca0.1Al2Si4O10(OH)2(H2O)10 
$  Density (g/cm3) = 1.100000 
$  Total atom density (atoms/b-cm) = 6.070E-02 
$  Composition by weight fraction 
M64        1001  -0.040400       $  H-1
           8016  -0.641100       $  O-16
          11023  -0.008400       $  Na-23
          13027  -0.098300       $  Al-27
          14000  -0.204600       $  Si
          20000  -0.007300       $  Ca
$************************************************************

$************************************************************
$  65  : Cat litter (non-clumping) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.100000 
$  Total atom density (atoms/b-cm) = 4.231E-02 
$  Composition by weight fraction 
M65        1001  -0.013732       $  H-1
           8016  -0.539919       $  O-16
          11023  -0.043271       $  Na-23
          12000  -0.050466       $  Mg
          13027  -0.052132       $  Al-27
          14000  -0.293185       $  Si
          19000  -0.003765       $  K
          20000  -0.001341       $  Ca
          26000  -0.002188       $  Fe
$************************************************************

$************************************************************
$  66  : Cellulose Acetate 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.420000 
$  Total atom density (atoms/b-cm) = 1.108E-01 
$  Composition by weight fraction 
M66        1001  -0.062162       $  H-1
           6000  -0.444462       $  C
           8016  -0.493376       $  O-16
$************************************************************

$************************************************************
$  67  : Celotex 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C6H10O5 
$  Molecular weight (g/mole) = 162.1406 
$  Density (g/cm3) = 0.240000 
$  Total atom density (atoms/b-cm) = 1.872E-02 
$  Composition by weight fraction 
M67        1001  -0.062165       $  H-1
           6000  -0.444455       $  C
           8016  -0.493380       $  O-16
$************************************************************

$************************************************************
$  68  : Ceric Sulfate Dosimeter Solution 
$  Source = PNNL-15870 Rev. 1 
$  Formula = H2O:Ce2SO4 
$  Density (g/cm3) = 1.030000 
$  Total atom density (atoms/b-cm) = 1.005E-01 
$  Composition by weight fraction 
M68        1001  -0.107596       $  H-1
           7014  -0.000800       $  N-14
           8016  -0.874976       $  O-16
          16000  -0.014627       $  S
          58000  -0.002001       $  Ce
$************************************************************

$************************************************************
$  69  : Cerium Fluoride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = CeF3 
$  Molecular weight (g/mole) = 197.1112096 
$  Density (g/cm3) = 6.160000 
$  Total atom density (atoms/b-cm) = 7.528E-02 
$  Composition by weight fraction 
M69        9019  -0.289153       $  F-19
          58000  -0.710847       $  Ce
$************************************************************

$************************************************************
$  70  : Cesium Iodide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = CsI 
$  Molecular weight (g/mole) = 259.80992 
$  Density (g/cm3) = 4.510000 
$  Total atom density (atoms/b-cm) = 2.091E-02 
$  Composition by weight fraction 
M70       53127  -0.488451       $  I-127
          55133  -0.511549       $  Cs-133
$************************************************************

$************************************************************
$  71  : Chromium 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Cr 
$  Molecular weight (g/mole) = 51.9961 
$  Density (g/cm3) = 7.180000 
$  Total atom density (atoms/b-cm) = 8.316E-02 
$  Composition by weight fraction 
M71       24000  -1.000000       $  Cr
$************************************************************

$************************************************************
$  72  : Clay 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.200000 
$  Total atom density (atoms/b-cm) = 6.333E-02 
$  Composition by weight fraction 
M72        8016  -0.484345       $  O-16
          11023  -0.007608       $  Na-23
          12000  -0.010691       $  Mg
          13027  -0.122125       $  Al-27
          14000  -0.294194       $  Si
          15031  -0.000113       $  P-31
          19000  -0.020427       $  K
          20000  -0.018957       $  Ca
          22000  -0.004668       $  Ti
          25055  -0.000064       $  Mn-55
          26000  -0.036804       $  Fe
$************************************************************

$************************************************************
$  73  : Coal, Anthracite 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.840000 
$  Total atom density (atoms/b-cm) = 5.269E-02 
$  Composition by weight fraction 
M73        1001  -0.024000       $  H-1
           6000  -0.937000       $  C
           7014  -0.009000       $  N-14
           8016  -0.024000       $  O-16
          16000  -0.006000       $  S
$************************************************************

$************************************************************
$  74  : Coal, Bituminous 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.750000 
$  Total atom density (atoms/b-cm) = 5.954E-02 
$  Composition by weight fraction 
M74        1001  -0.056000       $  H-1
           6000  -0.845000       $  C
           7014  -0.016000       $  N-14
           8016  -0.070000       $  O-16
          16000  -0.013000       $  S
$************************************************************

$************************************************************
$  75  : Coal, Lignite 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.750000 
$  Total atom density (atoms/b-cm) = 5.264E-02 
$  Composition by weight fraction 
M75        1001  -0.042000       $  H-1
           6000  -0.727000       $  C
           7014  -0.012000       $  N-14
           8016  -0.213000       $  O-16
          16000  -0.006000       $  S
$************************************************************

$************************************************************
$  76  : Concrete, Barite (Type BA) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 3.350000 
$  Total atom density (atoms/b-cm) = 6.547E-02 
$  Composition by weight fraction 
M76        1001  -0.003585       $  H-1
           8016  -0.311622       $  O-16
          12000  -0.001195       $  Mg
          13027  -0.004183       $  Al-27
          14000  -0.010457       $  Si
          16000  -0.107858       $  S
          20000  -0.050194       $  Ca
          26000  -0.047505       $  Fe
          56000  -0.463400       $  Ba
$************************************************************

$************************************************************
$  77  : Concrete, Barytes-Limonite 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 3.360000 
$  Total atom density (atoms/b-cm) = 8.732E-02 
$  Composition by weight fraction 
M77        1001  -0.010240       $  H-1
           8016  -0.378476       $  O-16
          11023  -0.000904       $  Na-23
          12000  -0.002309       $  Mg
          13027  -0.005020       $  Al-27
          14000  -0.013553       $  Si
          16000  -0.076097       $  S
          20000  -0.053910       $  Ca
          25055  -0.001405       $  Mn-55
          26000  -0.137135       $  Fe
          56000  -0.320952       $  Ba
$************************************************************

$************************************************************
$  78  : Concrete, Boron Frits-baryte 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 3.100000 
$  Total atom density (atoms/b-cm) = 7.064E-02 
$  Composition by weight fraction 
M78        1001  -0.005626       $  H-1
           5000  -0.010449       $  B
           8016  -0.339596       $  O-16
           9019  -0.002311       $  F-19
          11023  -0.012157       $  Na-23
          12000  -0.002311       $  Mg
          13027  -0.006430       $  Al-27
          14000  -0.033256       $  Si
          16000  -0.091932       $  S
          19000  -0.001005       $  K
          20000  -0.062896       $  Ca
          25055  -0.000201       $  Mn-55
          26000  -0.022003       $  Fe
          30000  -0.006631       $  Zn
          56000  -0.403195       $  Ba
$************************************************************

$************************************************************
$  79  : Concrete, Colemanite-baryte 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 3.200000 
$  Total atom density (atoms/b-cm) = 7.845E-02 
$  Composition by weight fraction 
M79        1001  -0.008564       $  H-1
           5000  -0.009874       $  B
           8016  -0.351537       $  O-16
          11023  -0.001108       $  Na-23
          12000  -0.002217       $  Mg
          13027  -0.006146       $  Al-27
          14000  -0.017733       $  Si
          16000  -0.097028       $  S
          20000  -0.085239       $  Ca
          25055  -0.000101       $  Mn-55
          26000  -0.010378       $  Fe
          56000  -0.410076       $  Ba
$************************************************************

$************************************************************
$  80  : Concrete, Ferro-phosphorus 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 4.800000 
$  Total atom density (atoms/b-cm) = 9.039E-02 
$  Composition by weight fraction 
M80        1001  -0.005000       $  H-1
           8016  -0.104000       $  O-16
          12000  -0.002000       $  Mg
          13027  -0.004000       $  Al-27
          14000  -0.034000       $  Si
          15031  -0.197000       $  P-31
          20000  -0.042000       $  Ca
          26000  -0.612000       $  Fe
$************************************************************

$************************************************************
$  81  : Concrete, Hanford Dry 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.180000 
$  Total atom density (atoms/b-cm) = 6.642E-02 
$  Composition by weight fraction 
M81        1001  -0.004000       $  H-1
           8016  -0.482102       $  O-16
          11023  -0.002168       $  Na-23
          12000  -0.014094       $  Mg
          13027  -0.069387       $  Al-27
          14000  -0.277549       $  Si
          19000  -0.013010       $  K
          20000  -0.080229       $  Ca
          26000  -0.057461       $  Fe
$************************************************************

$************************************************************
$  82  : Concrete, Hanford Wet 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.350000 
$  Total atom density (atoms/b-cm) = 8.423E-02 
$  Composition by weight fraction 
M82        1001  -0.012309       $  H-1
           8016  -0.513359       $  O-16
          11023  -0.002001       $  Na-23
          12000  -0.013009       $  Mg
          13027  -0.064045       $  Al-27
          14000  -0.256179       $  Si
          19000  -0.012008       $  K
          20000  -0.074052       $  Ca
          26000  -0.053037       $  Fe
$************************************************************

$************************************************************
$  83  : Concrete, Iron-limonite 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 4.400000 
$  Total atom density (atoms/b-cm) = 7.222E-02 
$  Composition by weight fraction 
M83        1001  -0.000500       $  H-1
           8016  -0.179910       $  O-16
          12000  -0.001999       $  Mg
          13027  -0.004998       $  Al-27
          14000  -0.013993       $  Si
          16000  -0.001000       $  S
          20000  -0.060970       $  Ca
          25055  -0.015992       $  Mn-55
          26000  -0.720640       $  Fe
$************************************************************

$************************************************************
$  84  : Concrete, Iron-Portland 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 5.900000 
$  Total atom density (atoms/b-cm) = 8.633E-02 
$  Composition by weight fraction 
M84        1001  -0.003321       $  H-1
           8016  -0.058563       $  O-16
          12000  -0.001308       $  Mg
          13027  -0.003321       $  Al-27
          14000  -0.009157       $  Si
          16000  -0.000503       $  S
          20000  -0.039847       $  Ca
          25055  -0.003522       $  Mn-55
          26000  -0.880459       $  Fe
$************************************************************

$************************************************************
$  85  : Concrete, Limonite and steel 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 4.540000 
$  Total atom density (atoms/b-cm) = 8.851E-02 
$  Composition by weight fraction 
M85        1001  -0.006840       $  H-1
           8016  -0.156222       $  O-16
          12000  -0.001545       $  Mg
          13027  -0.006399       $  Al-27
          14000  -0.014784       $  Si
          19000  -0.000883       $  K
          20000  -0.057590       $  Ca
          23000  -0.000883       $  V
          26000  -0.754854       $  Fe
$************************************************************

$************************************************************
$  86  : Concrete, Los Alamos (MCNP) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.250000 
$  Total atom density (atoms/b-cm) = 7.186E-02 
$  Composition by weight fraction 
M86        1001  -0.004530       $  H-1
           8016  -0.512600       $  O-16
          11023  -0.015270       $  Na-23
          13027  -0.035550       $  Al-27
          14000  -0.360360       $  Si
          20000  -0.057910       $  Ca
          26000  -0.013780       $  Fe
$************************************************************

$************************************************************
$  87  : Concrete, Luminite-colemanite-baryte 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 3.100000 
$  Total atom density (atoms/b-cm) = 8.194E-02 
$  Composition by weight fraction 
M87        1001  -0.010957       $  H-1
           5000  -0.008846       $  B
           8016  -0.371431       $  O-16
          11023  -0.001106       $  Na-23
          12000  -0.001407       $  Mg
          13027  -0.017692       $  Al-27
          14000  -0.009650       $  Si
          16000  -0.091074       $  S
          20000  -0.055086       $  Ca
          22000  -0.012766       $  Ti
          25055  -0.001206       $  Mn-55
          26000  -0.030860       $  Fe
          56000  -0.387917       $  Ba
$************************************************************

$************************************************************
$  88  : Concrete, Luminite-Portland-colemanite-baryte 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 3.100000 
$  Total atom density (atoms/b-cm) = 8.300E-02 
$  Composition by weight fraction 
M88        1001  -0.011126       $  H-1
           5000  -0.010316       $  B
           8016  -0.374023       $  O-16
          11023  -0.001113       $  Na-23
          12000  -0.002023       $  Mg
          13027  -0.013351       $  Al-27
          14000  -0.015070       $  Si
          16000  -0.090724       $  S
          20000  -0.077576       $  Ca
          22000  -0.000718       $  Ti
          25055  -0.000405       $  Mn-55
          26000  -0.018914       $  Fe
          56000  -0.384643       $  Ba
$************************************************************

$************************************************************
$  89  : Concrete, M-1 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 4.500000 
$  Total atom density (atoms/b-cm) = 8.790E-02 
$  Composition by weight fraction 
M89        1001  -0.008000       $  H-1
           5000  -0.009000       $  B
           8016  -0.107000       $  O-16
          12000  -0.043000       $  Mg
          17000  -0.021000       $  Cl
          25055  -0.003000       $  Mn-55
          20000  -0.011000       $  Ca
          26000  -0.798000       $  Fe
$************************************************************

$************************************************************
$  90  : Concrete, Magnetite 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 3.530000 
$  Total atom density (atoms/b-cm) = 7.970E-02 
$  Composition by weight fraction 
M90        1001  -0.003113       $  H-1
           8016  -0.330504       $  O-16
          12000  -0.009338       $  Mg
          13027  -0.023486       $  Al-27
          14000  -0.025750       $  Si
          16000  -0.001415       $  S
          20000  -0.071024       $  Ca
          22000  -0.054329       $  Ti
          23000  -0.003113       $  V
          24000  -0.001698       $  Cr
          25055  -0.001981       $  Mn-55
          26000  -0.474250       $  Fe
$************************************************************

$************************************************************
$  91  : Concrete, Magnetite and steel 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 4.640000 
$  Total atom density (atoms/b-cm) = 7.646E-02 
$  Composition by weight fraction 
M91        1001  -0.002374       $  H-1
           8016  -0.137678       $  O-16
          12000  -0.003669       $  Mg
          13027  -0.010358       $  Al-27
          14000  -0.015753       $  Si
          20000  -0.055675       $  Ca
          22000  -0.015969       $  Ti
          23000  -0.000647       $  V
          26000  -0.757877       $  Fe
$************************************************************

$************************************************************
$  92  : Concrete, Magnuson 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.147000 
$  Total atom density (atoms/b-cm) = 7.128E-02 
$  Composition by weight fraction 
M92        1001  -0.003319       $  H-1
           6000  -0.105320       $  C
           8016  -0.499428       $  O-16
          11023  -0.001411       $  Na-23
          12000  -0.094200       $  Mg
          13027  -0.007859       $  Al-27
          14000  -0.042101       $  Si
          16000  -0.002483       $  S
          17000  -0.000523       $  Cl
          19000  -0.009445       $  K
          20000  -0.226317       $  Ca
          22000  -0.001488       $  Ti
          25055  -0.000512       $  Mn-55
          26000  -0.005595       $  Fe
$************************************************************

$************************************************************
$  93  : Concrete, MO 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 5.500000 
$  Total atom density (atoms/b-cm) = 8.760E-02 
$  Composition by weight fraction 
M93        1001  -0.005000       $  H-1
           8016  -0.060000       $  O-16
          12000  -0.037000       $  Mg
          25055  -0.004000       $  Mn-55
          17000  -0.013000       $  Cl
          26000  -0.881000       $  Fe
$************************************************************

$************************************************************
$  94  : Concrete, Oak Ridge (ORNL) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.300000 
$  Total atom density (atoms/b-cm) = 7.969E-02 
$  Composition by weight fraction 
M94        1001  -0.006187       $  H-1
           6000  -0.175193       $  C
           8016  -0.410184       $  O-16
          11023  -0.000271       $  Na-23
          12000  -0.032649       $  Mg
          13027  -0.010830       $  Al-27
          14000  -0.034479       $  Si
          19000  -0.001138       $  K
          20000  -0.321287       $  Ca
          26000  -0.007784       $  Fe
$************************************************************

$************************************************************
$  95  : Concrete, Ordinary (NBS 03) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.350000 
$  Total atom density (atoms/b-cm) = 7.950E-02 
$  Composition by weight fraction 
M95        1001  -0.008485       $  H-1
           6000  -0.050064       $  C
           8016  -0.473483       $  O-16
          12000  -0.024183       $  Mg
          13027  -0.036063       $  Al-27
          14000  -0.145100       $  Si
          16000  -0.002970       $  S
          19000  -0.001697       $  K
          20000  -0.246924       $  Ca
          26000  -0.011031       $  Fe
$************************************************************

$************************************************************
$  96  : Concrete, Ordinary (NBS 04) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.350000 
$  Total atom density (atoms/b-cm) = 7.533E-02 
$  Composition by weight fraction 
M96        1001  -0.005558       $  H-1
           8016  -0.498076       $  O-16
          11023  -0.017101       $  Na-23
          12000  -0.002565       $  Mg
          13027  -0.045746       $  Al-27
          14000  -0.315092       $  Si
          16000  -0.001283       $  S
          19000  -0.019239       $  K
          20000  -0.082941       $  Ca
          26000  -0.012398       $  Fe
$************************************************************

$************************************************************
$  97  : Concrete, Ordinary (NIST) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.300000 
$  Total atom density (atoms/b-cm) = 9.946E-02 
$  Composition by weight fraction 
M97        1001  -0.022100       $  H-1
           6000  -0.002484       $  C
           8016  -0.574930       $  O-16
          11023  -0.015208       $  Na-23
          12000  -0.001266       $  Mg
          13027  -0.019953       $  Al-27
          14000  -0.304627       $  Si
          19000  -0.010045       $  K
          20000  -0.042951       $  Ca
          26000  -0.006435       $  Fe
$************************************************************

$************************************************************
$  98  : Concrete, Portland 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.300000 
$  Total atom density (atoms/b-cm) = 8.143E-02 
$  Composition by weight fraction 
M98        1001  -0.010000       $  H-1
           6000  -0.001000       $  C
           8016  -0.529107       $  O-16
          11023  -0.016000       $  Na-23
          12000  -0.002000       $  Mg
          13027  -0.033872       $  Al-27
          14000  -0.337021       $  Si
          19000  -0.013000       $  K
          20000  -0.044000       $  Ca
          26000  -0.014000       $  Fe
$************************************************************

$************************************************************
$  99  : Concrete, Regular 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.300000 
$  Total atom density (atoms/b-cm) = 8.178E-02 
$  Composition by weight fraction 
M99        1001  -0.010000       $  H-1
           8016  -0.532000       $  O-16
          11023  -0.029000       $  Na-23
          13027  -0.034000       $  Al-27
          14000  -0.337000       $  Si
          20000  -0.044000       $  Ca
          26000  -0.014000       $  Fe
$************************************************************

$************************************************************
$  100 : Concrete, Rocky Flats 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.320000 
$  Total atom density (atoms/b-cm) = 7.799E-02 
$  Composition by weight fraction 
M100       1001  -0.007500       $  H-1
           6000  -0.055200       $  C
           7014  -0.000200       $  N-14
           8016  -0.484900       $  O-16
          11023  -0.006300       $  Na-23
          12000  -0.012500       $  Mg
          13027  -0.021700       $  Al-27
          14000  -0.155000       $  Si
          16000  -0.001900       $  S
          19000  -0.013700       $  K
          20000  -0.230000       $  Ca
          22000  -0.001000       $  Ti
          26000  -0.010100       $  Fe
$************************************************************

$************************************************************
$  101 : Concrete, Serpentine 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.100000 
$  Total atom density (atoms/b-cm) = 8.108E-02 
$  Composition by weight fraction 
M101       1001  -0.015909       $  H-1
           6000  -0.000909       $  C
           8016  -0.511818       $  O-16
          11023  -0.004091       $  Na-23
          12000  -0.135000       $  Mg
          13027  -0.019091       $  Al-27
          14000  -0.209091       $  Si
          19000  -0.004091       $  K
          20000  -0.068182       $  Ca
          24000  -0.000909       $  Cr
          26000  -0.030909       $  Fe
$************************************************************

$************************************************************
$  102 : Copper 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Cu 
$  Molecular weight (g/mole) = 63.546 
$  Density (g/cm3) = 8.960000 
$  Total atom density (atoms/b-cm) = 8.491E-02 
$  Composition by weight fraction 
M102      29000  -1.000000       $  Cu
$************************************************************

$************************************************************
$  103 : Diatomaceous Earth 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.220000 
$  Total atom density (atoms/b-cm) = 7.780E-03 
$  Composition by weight fraction 
M103       1001  -0.008956       $  H-1
           8016  -0.546579       $  O-16
          11023  -0.009896       $  Na-23
          12000  -0.002774       $  Mg
          13027  -0.015581       $  Al-27
          14000  -0.394761       $  Si
          19000  -0.011074       $  K
          20000  -0.003945       $  Ca
          26000  -0.006434       $  Fe
$************************************************************

$************************************************************
$  104 : Earth, Typical Western U.S. 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.520000 
$  Total atom density (atoms/b-cm) = 6.831E-02 
$  Composition by weight fraction 
M104       1001  -0.023834       $  H-1
           8016  -0.598898       $  O-16
          13027  -0.080446       $  Al-27
          14000  -0.296821       $  Si
$************************************************************

$************************************************************
$  105 : Earth, U.S. Average 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.520000 
$  Total atom density (atoms/b-cm) = 4.383E-02 
$  Composition by weight fraction 
M105       8016  -0.513713       $  O-16
          11023  -0.006140       $  Na-23
          12000  -0.013303       $  Mg
          13027  -0.068563       $  Al-27
          14000  -0.271183       $  Si
          19000  -0.014327       $  K
          20000  -0.051167       $  Ca
          22000  -0.004605       $  Ti
          25055  -0.000716       $  Mn-55
          26000  -0.056283       $  Fe
$************************************************************

$************************************************************
$  106 : Ethane 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C2H6 
$  Molecular weight (g/mole) = 30.06904 
$  Density (g/cm3) = 0.001253 
$  Total atom density (atoms/b-cm) = 2.008E-04 
$  Composition by weight fraction 
M106       1001  -0.201125       $  H-1
           6000  -0.798875       $  C
$************************************************************

$************************************************************
$  107 : Ethyl Acetate 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C4H8O2 
$  Molecular weight (g/mole) = 88.10512 
$  Density (g/cm3) = 0.901000 
$  Total atom density (atoms/b-cm) = 8.622E-02 
$  Composition by weight fraction 
M107       1001  -0.091522       $  H-1
           6000  -0.545290       $  C
           8016  -0.363189       $  O-16
$************************************************************

$************************************************************
$  108 : Ethyl Alcohol 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C2H6O 
$  Molecular weight (g/mole) = 46.06844 
$  Density (g/cm3) = 0.789300 
$  Total atom density (atoms/b-cm) = 9.286E-02 
$  Composition by weight fraction 
M108       1001  -0.131269       $  H-1
           6000  -0.521438       $  C
           8016  -0.347294       $  O-16
$************************************************************

$************************************************************
$  109 : Ethylene 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C2H4 
$  Molecular weight (g/mole) = 28.05316 
$  Density (g/cm3) = 0.001175 
$  Total atom density (atoms/b-cm) = 1.513E-04 
$  Composition by weight fraction 
M109       1001  -0.143711       $  H-1
           6000  -0.856289       $  C
$************************************************************

$************************************************************
$  110 : Ethylene Glycol 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C2H6O2 
$  Molecular weight (g/mole) = 62.06784 
$  Density (g/cm3) = 1.114000 
$  Total atom density (atoms/b-cm) = 1.081E-01 
$  Composition by weight fraction 
M110       1001  -0.097436       $  H-1
           6000  -0.387018       $  C
           8016  -0.515546       $  O-16
$************************************************************

$************************************************************
$  111 : Explosive compound, AN 
$  Source = PNNL-15870 Rev. 1 
$  Formula = NH4NO3 
$  Molecular weight (g/mole) = 80.04336 
$  Density (g/cm3) = 1.720000 
$  Total atom density (atoms/b-cm) = 1.165E-01 
$  Composition by weight fraction 
M111       1001  -0.050370       $  H-1
           7014  -0.349978       $  N-14
           8016  -0.599652       $  O-16
$************************************************************

$************************************************************
$  112 : Explosive compound, EGDN 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C2H4N2O6 
$  Molecular weight (g/mole) = 152.06296 
$  Density (g/cm3) = 1.490000 
$  Total atom density (atoms/b-cm) = 8.261E-02 
$  Composition by weight fraction 
M112       1001  -0.026514       $  H-1
           6000  -0.157970       $  C
           7014  -0.184222       $  N-14
           8016  -0.631294       $  O-16
$************************************************************

$************************************************************
$  113 : Explosive compound, HMX 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C4H8N8O8 
$  Molecular weight (g/mole) = 296.15512 
$  Density (g/cm3) = 1.890000 
$  Total atom density (atoms/b-cm) = 1.076E-01 
$  Composition by weight fraction 
M113       1001  -0.027227       $  H-1
           6000  -0.162222       $  C
           7014  -0.378361       $  N-14
           8016  -0.432190       $  O-16
$************************************************************

$************************************************************
$  114 : Explosive compound, NC 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.490000 
$  Total atom density (atoms/b-cm) = 8.647E-02 
$  Composition by weight fraction 
M114       1001  -0.029216       $  H-1
           6000  -0.271296       $  C
           7014  -0.121276       $  N-14
           8016  -0.578212       $  O-16
$************************************************************

$************************************************************
$  115 : Explosive compound, NG 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C3H5N3O9 
$  Molecular weight (g/mole) = 227.0865 
$  Density (g/cm3) = 1.600000 
$  Total atom density (atoms/b-cm) = 8.486E-02 
$  Composition by weight fraction 
M115       1001  -0.022193       $  H-1
           6000  -0.158671       $  C
           7014  -0.185040       $  N-14
           8016  -0.634096       $  O-16
$************************************************************

$************************************************************
$  116 : Explosive compound, PETN 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C5H8N4O12 
$  Molecular weight (g/mole) = 316.13662 
$  Density (g/cm3) = 1.770000 
$  Total atom density (atoms/b-cm) = 9.778E-02 
$  Composition by weight fraction 
M116       1001  -0.025506       $  H-1
           6000  -0.189961       $  C
           7014  -0.177223       $  N-14
           8016  -0.607310       $  O-16
$************************************************************

$************************************************************
$  117 : Explosive compound, RDX 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C3H6N6O6 
$  Molecular weight (g/mole) = 222.11634 
$  Density (g/cm3) = 1.820000 
$  Total atom density (atoms/b-cm) = 1.036E-01 
$  Composition by weight fraction 
M117       1001  -0.027227       $  H-1
           6000  -0.162222       $  C
           7014  -0.378361       $  N-14
           8016  -0.432190       $  O-16
$************************************************************

$************************************************************
$  118 : Explosive compound, TNT 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C6H2(NO2)3CH3 
$  Molecular weight (g/mole) = 227.1311 
$  Density (g/cm3) = 1.650000 
$  Total atom density (atoms/b-cm) = 9.187E-02 
$  Composition by weight fraction 
M118       1001  -0.022189       $  H-1
           6000  -0.370160       $  C
           7014  -0.185004       $  N-14
           8016  -0.422648       $  O-16
$************************************************************

$************************************************************
$  119 : Eye Lens (ICRP) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.100000 
$  Total atom density (atoms/b-cm) = 1.055E-01 
$  Composition by weight fraction 
M119       1001  -0.099269       $  H-1
           6000  -0.193710       $  C
           7014  -0.053270       $  N-14
           8016  -0.653751       $  O-16
$************************************************************

$************************************************************
$  120 : Felt 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.185000 
$  Total atom density (atoms/b-cm) = 1.272E-02 
$  Composition by weight fraction 
M120       1001  -0.044200       $  H-1
           6000  -0.434600       $  C
           7014  -0.176500       $  N-14
           8016  -0.344700       $  O-16
$************************************************************

$************************************************************
$  121 : Ferric Oxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Fe2O3 
$  Molecular weight (g/mole) = 159.6882 
$  Density (g/cm3) = 5.200000 
$  Total atom density (atoms/b-cm) = 9.805E-02 
$  Composition by weight fraction 
M121       8016  -0.300567       $  O-16
          26000  -0.699433       $  Fe
$************************************************************

$************************************************************
$  122 : Ferrous Sulfate Dosimeter Solution 
$  Source = PNNL-15870 Rev. 1 
$  Formula = H2O:FeSO4 
$  Density (g/cm3) = 1.024000 
$  Total atom density (atoms/b-cm) = 1.004E-01 
$  Composition by weight fraction 
M122       1001  -0.108259       $  H-1
           7014  -0.000027       $  N-14
           8016  -0.878636       $  O-16
          11023  -0.000022       $  Na-23
          16000  -0.012968       $  S
          17000  -0.000034       $  Cl
          26000  -0.000054       $  Fe
$************************************************************

$************************************************************
$  123 : Fertilizer (Muriate of Potash) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.270000 
$  Total atom density (atoms/b-cm) = 2.070E-02 
$  Composition by weight fraction 
M123       1001  -0.000050       $  H-1
           8016  -0.000718       $  O-16
          11023  -0.008487       $  Na-23
          12000  -0.000206       $  Mg
          16000  -0.000159       $  S
          17000  -0.477922       $  Cl
          19000  -0.511852       $  K
          20000  -0.000276       $  Ca
          35000  -0.000330       $  Br
$************************************************************

$************************************************************
$  124 : Fiberglass, Type C 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.490000 
$  Total atom density (atoms/b-cm) = 7.354E-02 
$  Composition by weight fraction 
M124       5000  -0.018579       $  B
           8016  -0.478631       $  O-16
          11023  -0.059171       $  Na-23
          12000  -0.018037       $  Mg
          13027  -0.021107       $  Al-27
          14000  -0.302924       $  Si
          16000  -0.000399       $  S
          20000  -0.099757       $  Ca
          26000  -0.001395       $  Fe
$************************************************************

$************************************************************
$  125 : Fiberglass, Type E 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.565000 
$  Total atom density (atoms/b-cm) = 7.446E-02 
$  Composition by weight fraction 
M125       5000  -0.022803       $  B
           8016  -0.471950       $  O-16
           9019  -0.004895       $  F-19
          11023  -0.007262       $  Na-23
          12000  -0.014759       $  Mg
          13027  -0.072536       $  Al-27
          14000  -0.247102       $  Si
          19000  -0.008127       $  K
          20000  -0.143428       $  Ca
          22000  -0.004400       $  Ti
          26000  -0.002739       $  Fe
$************************************************************

$************************************************************
$  126 : Fiberglass, Type R 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.550000 
$  Total atom density (atoms/b-cm) = 7.433E-02 
$  Composition by weight fraction 
M126       8016  -0.486722       $  O-16
          12000  -0.036182       $  Mg
          13027  -0.132313       $  Al-27
          14000  -0.280461       $  Si
          20000  -0.064322       $  Ca
$************************************************************

$************************************************************
$  127 : Freon-12 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.120000 
$  Total atom density (atoms/b-cm) = 2.789E-02 
$  Composition by weight fraction 
M127       6000  -0.099335       $  C
           9019  -0.314247       $  F-19
          17000  -0.586418       $  Cl
$************************************************************

$************************************************************
$  128 : Freon-12B2 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.800000 
$  Total atom density (atoms/b-cm) = 2.583E-02 
$  Composition by weight fraction 
M128       6000  -0.057245       $  C
           9019  -0.181096       $  F-19
          35000  -0.761659       $  Br
$************************************************************

$************************************************************
$  129 : Freon-13 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.950000 
$  Total atom density (atoms/b-cm) = 2.738E-02 
$  Composition by weight fraction 
M129       6000  -0.114983       $  C
           9019  -0.545622       $  F-19
          17000  -0.339396       $  Cl
$************************************************************

$************************************************************
$  130 : Freon-13B1 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.500000 
$  Total atom density (atoms/b-cm) = 3.033E-02 
$  Composition by weight fraction 
M130       6000  -0.080659       $  C
           9019  -0.382749       $  F-19
          35000  -0.536592       $  Br
$************************************************************

$************************************************************
$  131 : Freon-13I1 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.800000 
$  Total atom density (atoms/b-cm) = 2.767E-02 
$  Composition by weight fraction 
M131       6000  -0.061309       $  C
           9019  -0.290924       $  F-19
          53127  -0.647767       $  I-127
$************************************************************

$************************************************************
$  132 : Gadolinium 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Gd 
$  Molecular weight (g/mole) = 157.25 
$  Density (g/cm3) = 7.900400 
$  Total atom density (atoms/b-cm) = 3.026E-02 
$  Composition by weight fraction 
M132      64000  -1.000000       $  Gd
$************************************************************

$************************************************************
$  133 : Gadolinium Oxysulfide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Gd2O2S 
$  Molecular weight (g/mole) = 378.5638 
$  Density (g/cm3) = 7.440000 
$  Total atom density (atoms/b-cm) = 5.918E-02 
$  Composition by weight fraction 
M133       8016  -0.084528       $  O-16
          16000  -0.084690       $  S
          64000  -0.830782       $  Gd
$************************************************************

$************************************************************
$  134 : Gadolinium Silicate (GSO) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Gd2SiO5 
$  Molecular weight (g/mole) = 422.5825 
$  Density (g/cm3) = 6.710000 
$  Total atom density (atoms/b-cm) = 7.650E-02 
$  Composition by weight fraction 
M134       8016  -0.189305       $  O-16
          14000  -0.066462       $  Si
          64000  -0.744233       $  Gd
$************************************************************

$************************************************************
$  135 : Gafchromic Sensor (GS) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.300000 
$  Total atom density (atoms/b-cm) = 1.248E-01 
$  Composition by weight fraction 
M135       1001  -0.089700       $  H-1
           6000  -0.605800       $  C
           7014  -0.112200       $  N-14
           8016  -0.192300       $  O-16
$************************************************************

$************************************************************
$  136 : Gallium Arsenide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = GaAs 
$  Molecular weight (g/mole) = 144.6446 
$  Density (g/cm3) = 5.310000 
$  Total atom density (atoms/b-cm) = 4.422E-02 
$  Composition by weight fraction 
M136      31000  -0.482030       $  Ga
          33075  -0.517970       $  As-75
$************************************************************

$************************************************************
$  137 : Gasoline 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C8H18 
$  Molecular weight (g/mole) = 114.22852 
$  Density (g/cm3) = 0.721000 
$  Total atom density (atoms/b-cm) = 9.811E-02 
$  Composition by weight fraction 
M137       1001  -0.157000       $  H-1
           6000  -0.843000       $  C
$************************************************************

$************************************************************
$  138 : Germanium, High Purity 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Ge 
$  Molecular weight (g/mole) = 72.64 
$  Density (g/cm3) = 5.323000 
$  Total atom density (atoms/b-cm) = 4.413E-02 
$  Composition by weight fraction 
M138      32000  -1.000000       $  Ge
$************************************************************

$************************************************************
$  139 : Glass Scintillator, Li Doped  (GS1, GS2, GS3) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.660000 
$  Total atom density (atoms/b-cm) = 8.233E-02 
$  Composition by weight fraction 
M139       3000  -0.027874       $  Li
           8016  -0.477940       $  O-16
          12000  -0.144729       $  Mg
          13027  -0.058218       $  Al-27
          14000  -0.257089       $  Si
          58000  -0.034151       $  Ce
$************************************************************

$************************************************************
$  140 : Glass Scintillator, Li Doped  (GS10, GS20, GS30) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.500000 
$  Total atom density (atoms/b-cm) = 8.650E-02 
$  Composition by weight fraction 
M140       3000  -0.083623       $  Li
           8016  -0.501077       $  O-16
          12000  -0.024121       $  Mg
          13027  -0.095265       $  Al-27
          14000  -0.261764       $  Si
          58000  -0.034151       $  Ce
$************************************************************

$************************************************************
$  141 : Glass Scintillator, Li Doped  (GSF1) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.420000 
$  Total atom density (atoms/b-cm) = 7.863E-02 
$  Composition by weight fraction 
M141       3000  -0.046550       $  Li
           8016  -0.505813       $  O-16
          11023  -0.017840       $  Na-23
          13027  -0.095456       $  Al-27
          14000  -0.313809       $  Si
          58000  -0.020531       $  Ce
$************************************************************

$************************************************************
$  142 : Glass Scintillator, Li Doped  (KG1, KG2, KG3) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.420000 
$  Total atom density (atoms/b-cm) = 8.568E-02 
$  Composition by weight fraction 
M142       3000  -0.097560       $  Li
           8016  -0.513850       $  O-16
          14000  -0.345902       $  Si
          58000  -0.042688       $  Ce
$************************************************************

$************************************************************
$  143 : Glass, Borosilicate (Pyrex Glass) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.230000 
$  Total atom density (atoms/b-cm) = 7.064E-02 
$  Composition by weight fraction 
M143       5000  -0.040064       $  B
           8016  -0.539562       $  O-16
          11023  -0.028191       $  Na-23
          13027  -0.011644       $  Al-27
          14000  -0.377220       $  Si
          19000  -0.003321       $  K
$************************************************************

$************************************************************
$  144 : Glass, Foam 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.128000 
$  Total atom density (atoms/b-cm) = 4.086E-03 
$  Composition by weight fraction 
M144       1001  -0.001000       $  H-1
           5000  -0.015000       $  B
           8016  -0.534000       $  O-16
          11023  -0.161000       $  Na-23
          14000  -0.279000       $  Si
          16000  -0.010000       $  S
$************************************************************

$************************************************************
$  145 : Glass, Lead 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 6.220000 
$  Total atom density (atoms/b-cm) = 6.177E-02 
$  Composition by weight fraction 
M145       8016  -0.156453       $  O-16
          14000  -0.080866       $  Si
          22000  -0.008092       $  Ti
          33075  -0.002651       $  As-75
          82000  -0.751938       $  Pb
$************************************************************

$************************************************************
$  146 : Glass, Plate 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.400000 
$  Total atom density (atoms/b-cm) = 6.878E-02 
$  Composition by weight fraction 
M146       8016  -0.459800       $  O-16
          11023  -0.096441       $  Na-23
          14000  -0.336553       $  Si
          20000  -0.107205       $  Ca
$************************************************************

$************************************************************
$  147 : Glycerol 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C3H8O3 
$  Molecular weight (g/mole) = 92.09382 
$  Density (g/cm3) = 1.261300 
$  Total atom density (atoms/b-cm) = 1.155E-01 
$  Composition by weight fraction 
M147       1001  -0.087554       $  H-1
           6000  -0.391262       $  C
           8016  -0.521185       $  O-16
$************************************************************

$************************************************************
$  148 : Gold 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Au 
$  Molecular weight (g/mole) = 196.96655 
$  Density (g/cm3) = 19.320000 
$  Total atom density (atoms/b-cm) = 5.907E-02 
$  Composition by weight fraction 
M148      79197  -1.000000       $  Au-197
$************************************************************

$************************************************************
$  149 : Gypsum (Plaster of Paris) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = CaSO4-2(H2O) 
$  Molecular weight (g/mole) = 172.17116 
$  Density (g/cm3) = 2.320000 
$  Total atom density (atoms/b-cm) = 9.738E-02 
$  Composition by weight fraction 
M149       1001  -0.023416       $  H-1
           8016  -0.557572       $  O-16
          16000  -0.186215       $  S
          20000  -0.232797       $  Ca
$************************************************************

$************************************************************
$  150 : He-3 proportional gas 
$  Source = PNNL-15870 Rev. 1 
$  Formula = He-3 
$  Molecular weight (g/mole) = 3.0160293097 
$  Density (g/cm3) = 0.000125 
$  Total atom density (atoms/b-cm) = 2.501E-05 
$  Composition by weight fraction 
M150       2003  -1.000000       $  He-3
$************************************************************

$************************************************************
$  151 : Helium, Natural 
$  Source = PNNL-15870 Rev. 1 
$  Formula = He 
$  Molecular weight (g/mole) = 4.002602 
$  Density (g/cm3) = 0.000166 
$  Total atom density (atoms/b-cm) = 2.502E-05 
$  Composition by weight fraction 
M151       2004  -1.000000       $  He-4
$************************************************************

$************************************************************
$  152 : Hydrogen 
$  Source = PNNL-15870 Rev. 1 
$  Formula = H2 
$  Molecular weight (g/mole) = 2.01588 
$  Density (g/cm3) = 0.000084 
$  Total atom density (atoms/b-cm) = 5.004E-05 
$  Composition by weight fraction 
M152       1001  -1.000000       $  H-1
$************************************************************

$************************************************************
$  153 : Incoloy-800 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 7.940000 
$  Total atom density (atoms/b-cm) = 8.672E-02 
$  Composition by weight fraction 
M153       6000  -0.000650       $  C
          13027  -0.003750       $  Al-27
          14000  -0.006500       $  Si
          16000  -0.000100       $  S
          22000  -0.003750       $  Ti
          24000  -0.210000       $  Cr
          25055  -0.009750       $  Mn-55
          26000  -0.435630       $  Fe
          28000  -0.325000       $  Ni
          29000  -0.004880       $  Cu
$************************************************************

$************************************************************
$  154 : Inconel-600 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 8.470000 
$  Total atom density (atoms/b-cm) = 8.966E-02 
$  Composition by weight fraction 
M154       6000  -0.000980       $  C
          14000  -0.003250       $  Si
          16000  -0.000100       $  S
          24000  -0.155000       $  Cr
          25055  -0.006500       $  Mn-55
          26000  -0.080000       $  Fe
          28000  -0.750930       $  Ni
          29000  -0.003250       $  Cu
$************************************************************

$************************************************************
$  155 : Inconel-625 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.320000 
$  Total atom density (atoms/b-cm) = 7.799E-02 
$  Composition by weight fraction 
M155       1001  -0.007500       $  H-1
           6000  -0.055200       $  C
           7014  -0.000200       $  N-14
           8016  -0.484900       $  O-16
          11023  -0.006300       $  Na-23
          12000  -0.012500       $  Mg
          13027  -0.021700       $  Al-27
          14000  -0.155000       $  Si
          16000  -0.001900       $  S
          19000  -0.013700       $  K
          20000  -0.230000       $  Ca
          22000  -0.001000       $  Ti
          26000  -0.010100       $  Fe
$************************************************************

$************************************************************
$  156 : Inconel-718 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 8.190000 
$  Total atom density (atoms/b-cm) = 8.547E-02 
$  Composition by weight fraction 
M156       5000  -0.000050       $  B
           6000  -0.000730       $  C
          13027  -0.005000       $  Al-27
          14000  -0.003180       $  Si
          15031  -0.000140       $  P-31
          16000  -0.000140       $  S
          22000  -0.009000       $  Ti
          24000  -0.190000       $  Cr
          25055  -0.003180       $  Mn-55
          26000  -0.170000       $  Fe
          28000  -0.525000       $  Ni
          27059  -0.009100       $  Co-59
          29000  -0.002730       $  Cu
          41093  -0.051250       $  Nb-93
          42000  -0.030500       $  Mo
$************************************************************

$************************************************************
$  157 : Indium 
$  Source = PNNL-15870 Rev. 1 
$  Formula = In 
$  Molecular weight (g/mole) = 114.818 
$  Density (g/cm3) = 7.310000 
$  Total atom density (atoms/b-cm) = 3.834E-02 
$  Composition by weight fraction 
M157      49000  -1.000000       $  In
$************************************************************

$************************************************************
$  158 : Iron 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Fe 
$  Molecular weight (g/mole) = 55.845 
$  Density (g/cm3) = 7.874000 
$  Total atom density (atoms/b-cm) = 8.491E-02 
$  Composition by weight fraction 
M158      26000  -1.000000       $  Fe
$************************************************************

$************************************************************
$  159 : Iron Boride (Fe2B) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Fe2B 
$  Molecular weight (g/mole) = 122.501 
$  Density (g/cm3) = 7.300000 
$  Total atom density (atoms/b-cm) = 1.077E-01 
$  Composition by weight fraction 
M159       5000  -0.088252       $  B
          26000  -0.911748       $  Fe
$************************************************************

$************************************************************
$  160 : Iron Boride (FeB) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = FeB 
$  Molecular weight (g/mole) = 66.656 
$  Density (g/cm3) = 7.150000 
$  Total atom density (atoms/b-cm) = 1.292E-01 
$  Composition by weight fraction 
M160       5000  -0.162174       $  B
          26000  -0.837826       $  Fe
$************************************************************

$************************************************************
$  161 : Iron, Armco Ingot 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 7.866000 
$  Total atom density (atoms/b-cm) = 8.511E-02 
$  Composition by weight fraction 
M161       6000  -0.000120       $  C
           8016  -0.001100       $  O-16
          15031  -0.000050       $  P-31
          16000  -0.000250       $  S
          25055  -0.000170       $  Mn-55
          26000  -0.998310       $  Fe
$************************************************************

$************************************************************
$  162 : Iron, Cast (gray) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 7.150000 
$  Total atom density (atoms/b-cm) = 8.890E-02 
$  Composition by weight fraction 
M162       6000  -0.034000       $  C
          14000  -0.026000       $  Si
          15031  -0.003000       $  P-31
          16000  -0.001000       $  S
          25055  -0.006500       $  Mn-55
          26000  -0.929500       $  Fe
$************************************************************

$************************************************************
$  163 : Iron, Wrought (Byers No.1) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 7.700000 
$  Total atom density (atoms/b-cm) = 8.346E-02 
$  Composition by weight fraction 
M163       6000  -0.000810       $  C
          14000  -0.001599       $  Si
          15031  -0.000628       $  P-31
          16000  -0.000101       $  S
          25055  -0.000152       $  Mn-55
          26000  -0.996711       $  Fe
$************************************************************

$************************************************************
$  164 : Kaowool 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.096000 
$  Total atom density (atoms/b-cm) = 2.841E-03 
$  Composition by weight fraction 
M164       5000  -0.000248       $  B
           8016  -0.500064       $  O-16
          13027  -0.238163       $  Al-27
          14000  -0.243627       $  Si
          20000  -0.000715       $  Ca
          22000  -0.010189       $  Ti
          26000  -0.006994       $  Fe
$************************************************************

$************************************************************
$  165 : Kapton Polyimide Film 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.420000 
$  Total atom density (atoms/b-cm) = 8.723E-02 
$  Composition by weight fraction 
M165       1001  -0.026362       $  H-1
           6000  -0.691133       $  C
           7014  -0.073270       $  N-14
           8016  -0.209235       $  O-16
$************************************************************

$************************************************************
$  166 : Kennertium 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 16.800000 
$  Total atom density (atoms/b-cm) = 8.122E-02 
$  Composition by weight fraction 
M166      28000  -0.090000       $  Ni
          29000  -0.150000       $  Cu
          74000  -0.760000       $  W
$************************************************************

$************************************************************
$  167 : Kernite 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Na2B4O7-4(H2O) 
$  Molecular weight (g/mole) = 273.28046 
$  Density (g/cm3) = 1.950000 
$  Total atom density (atoms/b-cm) = 1.074E-01 
$  Composition by weight fraction 
M167       1001  -0.029506       $  H-1
           5000  -0.158240       $  B
           8016  -0.644003       $  O-16
          11023  -0.168250       $  Na-23
$************************************************************

$************************************************************
$  168 : Kerosene 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C14H30 
$  Molecular weight (g/mole) = 198.388 
$  Density (g/cm3) = 0.819000 
$  Total atom density (atoms/b-cm) = 1.128E-01 
$  Composition by weight fraction 
M168       1001  -0.160000       $  H-1
           6000  -0.840000       $  C
$************************************************************

$************************************************************
$  169 : Krypton 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Kr 
$  Molecular weight (g/mole) = 83.798 
$  Density (g/cm3) = 0.003478 
$  Total atom density (atoms/b-cm) = 2.500E-05 
$  Composition by weight fraction 
M169      36000  -1.000000       $  Kr
$************************************************************

$************************************************************
$  170 : Kynar 
$  Source = PNNL-15870 Rev. 1 
$  Formula = H2C2F2 
$  Molecular weight (g/mole) = 64.0340864 
$  Density (g/cm3) = 1.790000 
$  Total atom density (atoms/b-cm) = 1.010E-01 
$  Composition by weight fraction 
M170       1001  -0.031481       $  H-1
           6000  -0.375135       $  C
           9019  -0.593384       $  F-19
$************************************************************

$************************************************************
$  171 : Lead 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Pb 
$  Molecular weight (g/mole) = 207.2 
$  Density (g/cm3) = 11.350000 
$  Total atom density (atoms/b-cm) = 3.299E-02 
$  Composition by weight fraction 
M171      82000  -1.000000       $  Pb
$************************************************************

$************************************************************
$  172 : Lead Tungstate (PWO) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = PbWO4 
$  Molecular weight (g/mole) = 455.0376 
$  Density (g/cm3) = 8.240000 
$  Total atom density (atoms/b-cm) = 6.543E-02 
$  Composition by weight fraction 
M172       8016  -0.140642       $  O-16
          74000  -0.404011       $  W
          82000  -0.455347       $  Pb
$************************************************************

$************************************************************
$  173 : Lithium 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Li 
$  Molecular weight (g/mole) = 6.941 
$  Density (g/cm3) = 0.534000 
$  Total atom density (atoms/b-cm) = 4.633E-02 
$  Composition by weight fraction 
M173       3000  -1.000000       $  Li
$************************************************************

$************************************************************
$  174 : Lithium Amide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = LiNH2 
$  Molecular weight (g/mole) = 22.96358 
$  Density (g/cm3) = 1.178000 
$  Total atom density (atoms/b-cm) = 1.236E-01 
$  Composition by weight fraction 
M174       1001  -0.087783       $  H-1
           3000  -0.302262       $  Li
           7014  -0.609955       $  N-14
$************************************************************

$************************************************************
$  175 : Lithium Fluoride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = LiF 
$  Molecular weight (g/mole) = 25.9394032 
$  Density (g/cm3) = 2.635000 
$  Total atom density (atoms/b-cm) = 1.223E-01 
$  Composition by weight fraction 
M175       3000  -0.267585       $  Li
           9019  -0.732415       $  F-19
$************************************************************

$************************************************************
$  176 : Lithium Gadrium Borate (LGB) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Li6Gd(BO3)3 
$  Molecular weight (g/mole) = 367.3741448 
$  Density (g/cm3) = 3.500000 
$  Total atom density (atoms/b-cm) = 1.090E-01 
$  Composition by weight fraction 
M176       3006  -0.098240       $  Li-6
           5010  -0.081766       $  B-10
           8016  -0.391956       $  O-16
          64000  -0.428038       $  Gd
$************************************************************

$************************************************************
$  177 : Lithium Hydride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = LiH 
$  Molecular weight (g/mole) = 7.94894 
$  Density (g/cm3) = 0.820000 
$  Total atom density (atoms/b-cm) = 1.242E-01 
$  Composition by weight fraction 
M177       1001  -0.126797       $  H-1
           3000  -0.873203       $  Li
$************************************************************

$************************************************************
$  178 : Lithium Iodide (high density) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = LiI 
$  Molecular weight (g/mole) = 133.84547 
$  Density (g/cm3) = 4.080000 
$  Total atom density (atoms/b-cm) = 3.671E-02 
$  Composition by weight fraction 
M178       3000  -0.051858       $  Li
          53127  -0.948142       $  I-127
$************************************************************

$************************************************************
$  179 : Lithium Iodide (low density) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = LiI 
$  Molecular weight (g/mole) = 133.84547 
$  Density (g/cm3) = 3.494000 
$  Total atom density (atoms/b-cm) = 3.144E-02 
$  Composition by weight fraction 
M179       3000  -0.051858       $  Li
          53127  -0.948142       $  I-127
$************************************************************

$************************************************************
$  180 : Lithium Oxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Li2O 
$  Molecular weight (g/mole) = 29.8814 
$  Density (g/cm3) = 2.013000 
$  Total atom density (atoms/b-cm) = 1.217E-01 
$  Composition by weight fraction 
M180       3000  -0.464570       $  Li
           8016  -0.535430       $  O-16
$************************************************************

$************************************************************
$  181 : Lithium Tetraborate 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Li2B4O7 
$  Molecular weight (g/mole) = 169.1218 
$  Density (g/cm3) = 2.440000 
$  Total atom density (atoms/b-cm) = 1.129E-01 
$  Composition by weight fraction 
M181       3000  -0.082085       $  Li
           5000  -0.255680       $  B
           8016  -0.662235       $  O-16
$************************************************************

$************************************************************
$  182 : Lucite 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C5O2H8 
$  Molecular weight (g/mole) = 100.11582 
$  Density (g/cm3) = 1.190000 
$  Total atom density (atoms/b-cm) = 1.074E-01 
$  Composition by weight fraction 
M182       1001  -0.080538       $  H-1
           6000  -0.599848       $  C
           8016  -0.319614       $  O-16
$************************************************************

$************************************************************
$  183 : Lutetium Aluminum Garnet (LuAG) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Al5Lu3O12 
$  Molecular weight (g/mole) = 851.80149 
$  Density (g/cm3) = 6.730000 
$  Total atom density (atoms/b-cm) = 9.516E-02 
$  Composition by weight fraction 
M183       8016  -0.225396       $  O-16
          13027  -0.158379       $  Al-27
          71000  -0.616225       $  Lu
$************************************************************

$************************************************************
$  184 : Lutetium Orthoaluminate (LuAP) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = LuAlO3 
$  Molecular weight (g/mole) = 249.946738 
$  Density (g/cm3) = 8.400000 
$  Total atom density (atoms/b-cm) = 1.012E-01 
$  Composition by weight fraction 
M184       8016  -0.192034       $  O-16
          13027  -0.107949       $  Al-27
          71000  -0.700017       $  Lu
$************************************************************

$************************************************************
$  185 : Lutetium Oxyorthosilicate (LSO) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Lu2SiO5 
$  Molecular weight (g/mole) = 458.0165 
$  Density (g/cm3) = 7.400000 
$  Total atom density (atoms/b-cm) = 7.784E-02 
$  Composition by weight fraction 
M185       8016  -0.174660       $  O-16
          14000  -0.061320       $  Si
          71000  -0.764021       $  Lu
$************************************************************

$************************************************************
$  186 : Lutetium Yttrium OxyorthoSilicate (LYSO) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Lu2Y2SiO5 
$  Molecular weight (g/mole) = 635.8282 
$  Density (g/cm3) = 7.300000 
$  Total atom density (atoms/b-cm) = 6.914E-02 
$  Composition by weight fraction 
M186       8016  -0.125815       $  O-16
          14000  -0.044172       $  Si
          39089  -0.279654       $  Y-89
          71000  -0.550359       $  Lu
$************************************************************

$************************************************************
$  187 : Magnesium 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Mg 
$  Molecular weight (g/mole) = 24.305 
$  Density (g/cm3) = 1.740000 
$  Total atom density (atoms/b-cm) = 4.311E-02 
$  Composition by weight fraction 
M187      12000  -1.000000       $  Mg
$************************************************************

$************************************************************
$  188 : Magnesium Oxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = MgO 
$  Molecular weight (g/mole) = 40.3044 
$  Density (g/cm3) = 3.580000 
$  Total atom density (atoms/b-cm) = 1.070E-01 
$  Composition by weight fraction 
M188       8016  -0.396964       $  O-16
          12000  -0.603036       $  Mg
$************************************************************

$************************************************************
$  189 : Magnesium Tetraborate 
$  Source = PNNL-15870 Rev. 1 
$  Formula = MgB4O7 
$  Molecular weight (g/mole) = 179.5448 
$  Density (g/cm3) = 2.530000 
$  Total atom density (atoms/b-cm) = 1.018E-01 
$  Composition by weight fraction 
M189       5000  -0.240837       $  B
           8016  -0.623790       $  O-16
          12000  -0.135373       $  Mg
$************************************************************

$************************************************************
$  190 : Masonite 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C6H10O5 
$  Molecular weight (g/mole) = 162.1406 
$  Density (g/cm3) = 1.300000 
$  Total atom density (atoms/b-cm) = 1.014E-01 
$  Composition by weight fraction 
M190       1001  -0.062165       $  H-1
           6000  -0.444455       $  C
           8016  -0.493380       $  O-16
$************************************************************

$************************************************************
$  191 : Melamine 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C5H7N6 
$  Molecular weight (g/mole) = 151.14928 
$  Density (g/cm3) = 1.350000 
$  Total atom density (atoms/b-cm) = 9.682E-02 
$  Composition by weight fraction 
M191       1001  -0.046680       $  H-1
           6000  -0.397313       $  C
           7014  -0.556008       $  N-14
$************************************************************

$************************************************************
$  192 : Mercury 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Hg 
$  Molecular weight (g/mole) = 200.59 
$  Density (g/cm3) = 13.546000 
$  Total atom density (atoms/b-cm) = 4.067E-02 
$  Composition by weight fraction 
M192      80000  -1.000000       $  Hg
$************************************************************

$************************************************************
$  193 : Mercury Iodide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = HgI2 
$  Molecular weight (g/mole) = 454.39894 
$  Density (g/cm3) = 6.360000 
$  Total atom density (atoms/b-cm) = 2.529E-02 
$  Composition by weight fraction 
M193      53127  -0.558560       $  I-127
          80000  -0.441440       $  Hg
$************************************************************

$************************************************************
$  194 : Methane 
$  Source = PNNL-15870 Rev. 1 
$  Formula = CH4 
$  Molecular weight (g/mole) = 16.04246 
$  Density (g/cm3) = 0.000667 
$  Total atom density (atoms/b-cm) = 1.252E-04 
$  Composition by weight fraction 
M194       1001  -0.251318       $  H-1
           6000  -0.748682       $  C
$************************************************************

$************************************************************
$  195 : Methanol 
$  Source = PNNL-15870 Rev. 1 
$  Formula = CH4O 
$  Molecular weight (g/mole) = 32.04186 
$  Density (g/cm3) = 0.791400 
$  Total atom density (atoms/b-cm) = 8.924E-02 
$  Composition by weight fraction 
M195       1001  -0.125822       $  H-1
           6000  -0.374852       $  C
           8016  -0.499326       $  O-16
$************************************************************

$************************************************************
$  196 : Methylene Chloride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = CH2Cl2 
$  Molecular weight (g/mole) = 84.93258 
$  Density (g/cm3) = 1.326600 
$  Total atom density (atoms/b-cm) = 4.703E-02 
$  Composition by weight fraction 
M196       1001  -0.023735       $  H-1
           6000  -0.141415       $  C
          17000  -0.834850       $  Cl
$************************************************************

$************************************************************
$  197 : Molybdenum 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Mo 
$  Molecular weight (g/mole) = 95.94 
$  Density (g/cm3) = 10.220000 
$  Total atom density (atoms/b-cm) = 6.415E-02 
$  Composition by weight fraction 
M197      42000  -1.000000       $  Mo
$************************************************************

$************************************************************
$  198 : Monosodium Titanate, MST 
$  Source = PNNL-15870 Rev. 1 
$  Formula = NaTi2O5H 
$  Molecular weight (g/mole) = 199.72871 
$  Density (g/cm3) = 1.000000 
$  Total atom density (atoms/b-cm) = 2.714E-02 
$  Composition by weight fraction 
M198       1001  -0.005047       $  H-1
           8016  -0.400528       $  O-16
          11023  -0.115105       $  Na-23
          22000  -0.479320       $  Ti
$************************************************************

$************************************************************
$  199 : Muscle Equivalent-Liquid, with sucrose 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.110000 
$  Total atom density (atoms/b-cm) = 1.052E-01 
$  Composition by weight fraction 
M199       1001  -0.098234       $  H-1
           6000  -0.156214       $  C
           7014  -0.035451       $  N-14
           8016  -0.710101       $  O-16
$************************************************************

$************************************************************
$  200 : Muscle Equivalent-Liquid, without sucrose 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.070000 
$  Total atom density (atoms/b-cm) = 1.032E-01 
$  Composition by weight fraction 
M200       1001  -0.101969       $  H-1
           6000  -0.120058       $  C
           7014  -0.035451       $  N-14
           8016  -0.742522       $  O-16
$************************************************************

$************************************************************
$  201 : Muscle, Skeletal 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.040000 
$  Total atom density (atoms/b-cm) = 9.911E-02 
$  Composition by weight fraction 
M201       1001  -0.100637       $  H-1
           6000  -0.107830       $  C
           7014  -0.027680       $  N-14
           8016  -0.754773       $  O-16
          11023  -0.000750       $  Na-23
          12000  -0.000190       $  Mg
          15031  -0.001800       $  P-31
          16000  -0.002410       $  S
          17000  -0.000790       $  Cl
          19000  -0.003020       $  K
          20000  -0.000030       $  Ca
          26000  -0.000040       $  Fe
          30000  -0.000050       $  Zn
$************************************************************

$************************************************************
$  202 : Muscle, Striated 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.040000 
$  Total atom density (atoms/b-cm) = 1.001E-01 
$  Composition by weight fraction 
M202       1001  -0.101997       $  H-1
           6000  -0.123000       $  C
           7014  -0.035000       $  N-14
           8016  -0.729003       $  O-16
          11023  -0.000800       $  Na-23
          12000  -0.000200       $  Mg
          15031  -0.002000       $  P-31
          16000  -0.005000       $  S
          19000  -0.003000       $  K
$************************************************************

$************************************************************
$  203 : Neon 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Ne 
$  Molecular weight (g/mole) = 20.1797 
$  Density (g/cm3) = 0.000839 
$  Total atom density (atoms/b-cm) = 2.502E-05 
$  Composition by weight fraction 
M203      10020  -1.000000       $  Ne-20
$************************************************************

$************************************************************
$  204 : Nickel 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Ni 
$  Molecular weight (g/mole) = 58.6934 
$  Density (g/cm3) = 8.902000 
$  Total atom density (atoms/b-cm) = 9.134E-02 
$  Composition by weight fraction 
M204      28000  -1.000000       $  Ni
$************************************************************

$************************************************************
$  205 : Niobium 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Nb 
$  Molecular weight (g/mole) = 92.90638 
$  Density (g/cm3) = 8.570000 
$  Total atom density (atoms/b-cm) = 5.555E-02 
$  Composition by weight fraction 
M205      41093  -1.000000       $  Nb-93
$************************************************************

$************************************************************
$  206 : Nitrogen 
$  Source = PNNL-15870 Rev. 1 
$  Formula = N2 
$  Molecular weight (g/mole) = 28.0134 
$  Density (g/cm3) = 0.001165 
$  Total atom density (atoms/b-cm) = 5.010E-05 
$  Composition by weight fraction 
M206       7014  -1.000000       $  N-14
$************************************************************

$************************************************************
$  207 : Nylon, Dupont ELVAmide 8062 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.080000 
$  Total atom density (atoms/b-cm) = 1.126E-01 
$  Composition by weight fraction 
M207       1001  -0.103509       $  H-1
           6000  -0.648416       $  C
           7014  -0.099536       $  N-14
           8016  -0.148539       $  O-16
$************************************************************

$************************************************************
$  208 : Nylon, Type 11 (Rilsan) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.425000 
$  Total atom density (atoms/b-cm) = 1.592E-01 
$  Composition by weight fraction 
M208       1001  -0.115476       $  H-1
           6000  -0.720819       $  C
           7014  -0.076417       $  N-14
           8016  -0.087289       $  O-16
$************************************************************

$************************************************************
$  209 : Nylon, Type 6 and Type 6/6 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C12H22N2O2 
$  Molecular weight (g/mole) = 226.31528 
$  Density (g/cm3) = 1.140000 
$  Total atom density (atoms/b-cm) = 1.153E-01 
$  Composition by weight fraction 
M209       1001  -0.097976       $  H-1
           6000  -0.636856       $  C
           7014  -0.123779       $  N-14
           8016  -0.141389       $  O-16
$************************************************************

$************************************************************
$  210 : Nylon, Type 6/10 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.140000 
$  Total atom density (atoms/b-cm) = 1.215E-01 
$  Composition by weight fraction 
M210       1001  -0.107062       $  H-1
           6000  -0.680449       $  C
           7014  -0.099189       $  N-14
           8016  -0.113300       $  O-16
$************************************************************

$************************************************************
$  211 : Oil, Crude (Heavy, Cold Lake, Canada) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.970000 
$  Total atom density (atoms/b-cm) = 1.024E-01 
$  Composition by weight fraction 
M211       1001  -0.104000       $  H-1
           6000  -0.837000       $  C
           7014  -0.004000       $  N-14
           8016  -0.011000       $  O-16
          16000  -0.044000       $  S
$************************************************************

$************************************************************
$  212 : Oil, Crude (Heavy, Mexican) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.975000 
$  Total atom density (atoms/b-cm) = 1.031E-01 
$  Composition by weight fraction 
M212       1001  -0.104039       $  H-1
           6000  -0.853733       $  C
          16000  -0.042228       $  S
$************************************************************

$************************************************************
$  213 : Oil, Crude (Heavy, Qayarah, Iraq) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.970000 
$  Total atom density (atoms/b-cm) = 1.002E-01 
$  Composition by weight fraction 
M213       1001  -0.102000       $  H-1
           6000  -0.807000       $  C
           7014  -0.007000       $  N-14
          16000  -0.084000       $  S
$************************************************************

$************************************************************
$  214 : Oil, Crude (Light, Texas) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.875000 
$  Total atom density (atoms/b-cm) = 1.024E-01 
$  Composition by weight fraction 
M214       1001  -0.123246       $  H-1
           6000  -0.852204       $  C
           7014  -0.007014       $  N-14
          16000  -0.017535       $  S
$************************************************************

$************************************************************
$  215 : Oil, Fuel (Calif.) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.955000 
$  Total atom density (atoms/b-cm) = 1.133E-01 
$  Composition by weight fraction 
M215       1001  -0.125878       $  H-1
           6000  -0.862308       $  C
          16000  -0.011814       $  S
$************************************************************

$************************************************************
$  216 : Oil, Hydraulic 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C40H33O4Cl6P 
$  Molecular weight (g/mole) = 821.379381 
$  Density (g/cm3) = 0.871000 
$  Total atom density (atoms/b-cm) = 5.364E-02 
$  Composition by weight fraction 
M216       1001  -0.040495       $  H-1
           6000  -0.584904       $  C
           8016  -0.077915       $  O-16
          15031  -0.037709       $  P-31
          17000  -0.258977       $  Cl
$************************************************************

$************************************************************
$  217 : Oil, Lard 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C10H18O 
$  Molecular weight (g/mole) = 154.24932 
$  Density (g/cm3) = 0.915000 
$  Total atom density (atoms/b-cm) = 1.036E-01 
$  Composition by weight fraction 
M217       1001  -0.117621       $  H-1
           6000  -0.778655       $  C
           8016  -0.103724       $  O-16
$************************************************************

$************************************************************
$  218 : Oxygen 
$  Source = PNNL-15870 Rev. 1 
$  Formula = O2 
$  Molecular weight (g/mole) = 31.9988 
$  Density (g/cm3) = 0.001332 
$  Total atom density (atoms/b-cm) = 5.012E-05 
$  Composition by weight fraction 
M218       8016  -1.000000       $  O-16
$************************************************************

$************************************************************
$  219 : P-10 gas 
$  Source = PNNL-15870 Rev. 1 
$  Formula = 90% Ar, 10% CH4 
$  Molecular weight (g/mole) = 37.557446 
$  Density (g/cm3) = 0.001561 
$  Total atom density (atoms/b-cm) = 3.505E-05 
$  Composition by weight fraction 
M219       1001  -0.010735       $  H-1
           6000  -0.031980       $  C
          18000  -0.957286       $  Ar
$************************************************************

$************************************************************
$  220 : P-5 gas 
$  Source = PNNL-15870 Rev. 1 
$  Formula = 95% Ar, 5% CH4 
$  Molecular weight (g/mole) = 38.752723 
$  Density (g/cm3) = 0.001611 
$  Total atom density (atoms/b-cm) = 3.004E-05 
$  Composition by weight fraction 
M220       1001  -0.005202       $  H-1
           6000  -0.015497       $  C
          18000  -0.979302       $  Ar
$************************************************************

$************************************************************
$  221 : Palladium 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Pd 
$  Molecular weight (g/mole) = 106.42 
$  Density (g/cm3) = 12.020000 
$  Total atom density (atoms/b-cm) = 6.802E-02 
$  Composition by weight fraction 
M221      46000  -1.000000       $  Pd
$************************************************************

$************************************************************
$  222 : Photographic Emulsion, Gel in 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.291400 
$  Total atom density (atoms/b-cm) = 1.145E-01 
$  Composition by weight fraction 
M222       1001  -0.081180       $  H-1
           6000  -0.416060       $  C
           7014  -0.111240       $  N-14
           8016  -0.380640       $  O-16
          16000  -0.010880       $  S
$************************************************************

$************************************************************
$  223 : Photographic Emulsion, Kodak Type AA 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.200000 
$  Total atom density (atoms/b-cm) = 9.105E-02 
$  Composition by weight fraction 
M223       1001  -0.030500       $  H-1
           6000  -0.210700       $  C
           7014  -0.072100       $  N-14
           8016  -0.163200       $  O-16
          35000  -0.222800       $  Br
          47000  -0.300700       $  Ag
$************************************************************

$************************************************************
$  224 : Photographic Emulsion, Standard Nuclear 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 3.815000 
$  Total atom density (atoms/b-cm) = 7.895E-02 
$  Composition by weight fraction 
M224       1001  -0.014100       $  H-1
           6000  -0.072261       $  C
           7014  -0.019320       $  N-14
           8016  -0.066101       $  O-16
          16000  -0.001890       $  S
          35000  -0.349104       $  Br
          47000  -0.474105       $  Ag
          53127  -0.003120       $  I-127
$************************************************************

$************************************************************
$  225 : Platinum 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Pt 
$  Molecular weight (g/mole) = 195.078 
$  Density (g/cm3) = 21.450000 
$  Total atom density (atoms/b-cm) = 6.622E-02 
$  Composition by weight fraction 
M225      78000  -1.000000       $  Pt
$************************************************************

$************************************************************
$  226 : Plutonium Bromide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = PuBr3 
$  Molecular weight (g/mole) = 478.8329578603 
$  Density (g/cm3) = 6.750000 
$  Total atom density (atoms/b-cm) = 3.396E-02 
$  Composition by weight fraction 
M226      35000  -0.500617       $  Br
          94238  -0.000250       $  Pu-238
          94239  -0.466923       $  Pu-239
          94240  -0.029963       $  Pu-240
          94241  -0.001998       $  Pu-241
          94242  -0.000250       $  Pu-242
          95241  0.000000        $  Am-241
$************************************************************

$************************************************************
$  227 : Plutonium Carbide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = PuC 
$  Molecular weight (g/mole) = 251.1316578603 
$  Density (g/cm3) = 13.600000 
$  Total atom density (atoms/b-cm) = 6.523E-02 
$  Composition by weight fraction 
M227       6000  -0.047826       $  C
          94238  -0.000476       $  Pu-238
          94239  -0.890282       $  Pu-239
          94240  -0.057130       $  Pu-240
          94241  -0.003809       $  Pu-241
          94242  -0.000476       $  Pu-242
          95241  0.000000        $  Am-241
$************************************************************

$************************************************************
$  228 : Plutonium Chloride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = PuCl3 
$  Molecular weight (g/mole) = 345.4799578603 
$  Density (g/cm3) = 5.710000 
$  Total atom density (atoms/b-cm) = 3.981E-02 
$  Composition by weight fraction 
M228      17000  -0.307859       $  Cl
          94238  -0.000346       $  Pu-238
          94239  -0.647152       $  Pu-239
          94240  -0.041528       $  Pu-240
          94241  -0.002769       $  Pu-241
          94242  -0.000346       $  Pu-242
          95241  0.000000        $  Am-241
$************************************************************

$************************************************************
$  229 : Plutonium Dioxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = PuO2 
$  Molecular weight (g/mole) = 271.1197578603 
$  Density (g/cm3) = 11.460000 
$  Total atom density (atoms/b-cm) = 7.637E-02 
$  Composition by weight fraction 
M229       8016  -0.118025       $  O-16
          94238  -0.000441       $  Pu-238
          94239  -0.824647       $  Pu-239
          94240  -0.052919       $  Pu-240
          94241  -0.003528       $  Pu-241
          94242  -0.000441       $  Pu-242
          95241  0.000000        $  Am-241
$************************************************************

$************************************************************
$  230 : Plutonium Flouride (PuF3) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = PuF3 
$  Molecular weight (g/mole) = 296.1161674603 
$  Density (g/cm3) = 9.330000 
$  Total atom density (atoms/b-cm) = 7.590E-02 
$  Composition by weight fraction 
M230       9019  -0.192476       $  F-19
          94238  -0.000404       $  Pu-238
          94239  -0.755035       $  Pu-239
          94240  -0.048451       $  Pu-240
          94241  -0.003230       $  Pu-241
          94242  -0.000404       $  Pu-242
          95241  0.000000        $  Am-241
$************************************************************

$************************************************************
$  231 : Plutonium Flouride (PuF4) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = PuF4 
$  Molecular weight (g/mole) = 315.1145706603 
$  Density (g/cm3) = 7.000000 
$  Total atom density (atoms/b-cm) = 6.689E-02 
$  Composition by weight fraction 
M231       9019  -0.241162       $  F-19
          94238  -0.000379       $  Pu-238
          94239  -0.709514       $  Pu-239
          94240  -0.045530       $  Pu-240
          94241  -0.003035       $  Pu-241
          94242  -0.000379       $  Pu-242
          95241  0.000000        $  Am-241
$************************************************************

$************************************************************
$  232 : Plutonium Flouride (PuF6) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = PuF6 
$  Molecular weight (g/mole) = 353.1113770603 
$  Density (g/cm3) = 5.080000 
$  Total atom density (atoms/b-cm) = 6.065E-02 
$  Composition by weight fraction 
M232       9019  -0.322817       $  F-19
          94238  -0.000339       $  Pu-238
          94239  -0.633166       $  Pu-239
          94240  -0.040631       $  Pu-240
          94241  -0.002709       $  Pu-241
          94242  -0.000339       $  Pu-242
          95241  0.000000        $  Am-241
$************************************************************

$************************************************************
$  233 : Plutonium Iodide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = PuI3 
$  Molecular weight (g/mole) = 619.8343678603 
$  Density (g/cm3) = 6.920000 
$  Total atom density (atoms/b-cm) = 2.689E-02 
$  Composition by weight fraction 
M233      53127  -0.614218       $  I-127
          94238  -0.000193       $  Pu-238
          94239  -0.360706       $  Pu-239
          94240  -0.023147       $  Pu-240
          94241  -0.001543       $  Pu-241
          94242  -0.000193       $  Pu-242
          95241  0.000000        $  Am-241
$************************************************************

$************************************************************
$  234 : Plutonium Nitrate 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Pu(NO3)4 
$  Molecular weight (g/mole) = 487.1405578603 
$  Density (g/cm3) = 2.447000 
$  Total atom density (atoms/b-cm) = 5.143E-02 
$  Composition by weight fraction 
M234       7014  -0.115012       $  N-14
           8016  -0.394122       $  O-16
          94238  -0.000245       $  Pu-238
          94239  -0.458960       $  Pu-239
          94240  -0.029452       $  Pu-240
          94241  -0.001963       $  Pu-241
          94242  -0.000245       $  Pu-242
          95241  0.000000        $  Am-241
$************************************************************

$************************************************************
$  235 : Plutonium Nitride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = PuN 
$  Molecular weight (g/mole) = 253.1276578603 
$  Density (g/cm3) = 14.250000 
$  Total atom density (atoms/b-cm) = 6.780E-02 
$  Composition by weight fraction 
M235       7014  -0.055335       $  N-14
          94238  -0.000472       $  Pu-238
          94239  -0.883262       $  Pu-239
          94240  -0.056680       $  Pu-240
          94241  -0.003779       $  Pu-241
          94242  -0.000472       $  Pu-242
          95241  0.000000        $  Am-241
$************************************************************

$************************************************************
$  236 : Plutonium Oxide (Pu2O3) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Pu2O3 
$  Molecular weight (g/mole) = 526.2401157206 
$  Density (g/cm3) = 10.500000 
$  Total atom density (atoms/b-cm) = 6.008E-02 
$  Composition by weight fraction 
M236       8016  -0.091210       $  O-16
          94238  -0.000454       $  Pu-238
          94239  -0.849719       $  Pu-239
          94240  -0.054527       $  Pu-240
          94241  -0.003635       $  Pu-241
          94242  -0.000454       $  Pu-242
          95241  0.000000        $  Am-241
$************************************************************

$************************************************************
$  237 : Plutonium Oxide (PuO) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = PuO 
$  Molecular weight (g/mole) = 255.1203578603 
$  Density (g/cm3) = 14.000000 
$  Total atom density (atoms/b-cm) = 6.609E-02 
$  Composition by weight fraction 
M237       8016  -0.062713       $  O-16
          94238  -0.000469       $  Pu-238
          94239  -0.876363       $  Pu-239
          94240  -0.056237       $  Pu-240
          94241  -0.003749       $  Pu-241
          94242  -0.000469       $  Pu-242
          95241  0.000000        $  Am-241
$************************************************************

$************************************************************
$  238 : Plutonium, Aged WGPu (A: 4-7% Pu-240) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 19.840000 
$  Total atom density (atoms/b-cm) = 4.997E-02 
$  Composition by weight fraction 
M238      94238  -0.000100       $  Pu-238
          94239  -0.936296       $  Pu-239
          94240  -0.059910       $  Pu-240
          94241  -0.001997       $  Pu-241
          94242  -0.000300       $  Pu-242
          95241  -0.001398       $  Am-241
$************************************************************

$************************************************************
$  239 : Plutonium, Aged WGPu (B: 10-13% Pu-240) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 19.840000 
$  Total atom density (atoms/b-cm) = 4.995E-02 
$  Composition by weight fraction 
M239      94238  -0.000892       $  Pu-238
          94239  -0.861901       $  Pu-239
          94240  -0.117081       $  Pu-240
          94241  -0.009914       $  Pu-241
          94242  -0.001685       $  Pu-242
          95241  -0.008526       $  Am-241
$************************************************************

$************************************************************
$  240 : Plutonium, Aged WGPu (C: 16-19% Pu-240) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 19.840000 
$  Total atom density (atoms/b-cm) = 4.993E-02 
$  Composition by weight fraction 
M240      94238  -0.002334       $  Pu-238
          94239  -0.784554       $  Pu-239
          94240  -0.165159       $  Pu-240
          94241  -0.014006       $  Pu-241
          94242  -0.006711       $  Pu-242
          95241  -0.027235       $  Am-241
$************************************************************

$************************************************************
$  241 : Plutonium, DOE 3013 WGPu 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 19.840000 
$  Total atom density (atoms/b-cm) = 4.997E-02 
$  Composition by weight fraction 
M241      94238  -0.000500       $  Pu-238
          94239  -0.935000       $  Pu-239
          94240  -0.060000       $  Pu-240
          94241  -0.004000       $  Pu-241
          94242  -0.000500       $  Pu-242
$************************************************************

$************************************************************
$  242 : Plutonium, Fuel Grade 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 19.840000 
$  Total atom density (atoms/b-cm) = 4.995E-02 
$  Composition by weight fraction 
M242      94238  -0.001000       $  Pu-238
          94239  -0.861000       $  Pu-239
          94240  -0.120000       $  Pu-240
          94241  -0.016000       $  Pu-241
          94242  -0.002000       $  Pu-242
$************************************************************

$************************************************************
$  243 : Plutonium, Power Grade 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 19.840000 
$  Total atom density (atoms/b-cm) = 4.987E-02 
$  Composition by weight fraction 
M243      94238  -0.009901       $  Pu-238
          94239  -0.623762       $  Pu-239
          94240  -0.217822       $  Pu-240
          94241  -0.118812       $  Pu-241
          94242  -0.029703       $  Pu-242
$************************************************************

$************************************************************
$  244 : Plutonium, Shefelbine WGPu 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 19.840000 
$  Total atom density (atoms/b-cm) = 4.997E-02 
$  Composition by weight fraction 
M244      94238  -0.000300       $  Pu-238
          94239  -0.939200       $  Pu-239
          94240  -0.057000       $  Pu-240
          94241  -0.003000       $  Pu-241
          94242  -0.000300       $  Pu-242
          95241  -0.000200       $  Am-241
$************************************************************

$************************************************************
$  245 : Polycarbonate 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C16H14O3 
$  Molecular weight (g/mole) = 254.28056 
$  Density (g/cm3) = 1.200000 
$  Total atom density (atoms/b-cm) = 9.378E-02 
$  Composition by weight fraction 
M245       1001  -0.055491       $  H-1
           6000  -0.755751       $  C
           8016  -0.188758       $  O-16
$************************************************************

$************************************************************
$  246 : Polyethylene Terephthalate (PET) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.380000 
$  Total atom density (atoms/b-cm) = 9.514E-02 
$  Composition by weight fraction 
M246       1001  -0.041960       $  H-1
           6000  -0.625016       $  C
           8016  -0.333024       $  O-16
$************************************************************

$************************************************************
$  247 : Polyethylene, Borated 
$  Source = PNNL-15870 Rev. 1 
$  Formula = B4C in C2H4 
$  Density (g/cm3) = 1.000000 
$  Total atom density (atoms/b-cm) = 1.193E-01 
$  Composition by weight fraction 
M247       1001  -0.125355       $  H-1
           5000  -0.100000       $  B
           6000  -0.774645       $  C
$************************************************************

$************************************************************
$  248 : Polyethylene, Non-borated 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C2H4 
$  Molecular weight (g/mole) = 28.05316 
$  Density (g/cm3) = 0.930000 
$  Total atom density (atoms/b-cm) = 1.198E-01 
$  Composition by weight fraction 
M248       1001  -0.143716       $  H-1
           6000  -0.856284       $  C
$************************************************************

$************************************************************
$  249 : Polyisocyanurate (PIR) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C15H10N2O2 
$  Molecular weight (g/mole) = 250.2521 
$  Density (g/cm3) = 0.048200 
$  Total atom density (atoms/b-cm) = 3.364E-03 
$  Composition by weight fraction 
M249       1001  -0.040277       $  H-1
           6000  -0.719916       $  C
           7014  -0.111941       $  N-14
           8016  -0.127866       $  O-16
$************************************************************

$************************************************************
$  250 : Polypropylene (PP) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C3H6 
$  Molecular weight (g/mole) = 42.07974 
$  Density (g/cm3) = 0.900000 
$  Total atom density (atoms/b-cm) = 1.159E-01 
$  Composition by weight fraction 
M250       1001  -0.143711       $  H-1
           6000  -0.856289       $  C
$************************************************************

$************************************************************
$  251 : Polystyrene (PS) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C8H8 
$  Molecular weight (g/mole) = 104.14912 
$  Density (g/cm3) = 1.060000 
$  Total atom density (atoms/b-cm) = 9.807E-02 
$  Composition by weight fraction 
M251       1001  -0.077421       $  H-1
           6000  -0.922579       $  C
$************************************************************

$************************************************************
$  252 : Polytetrafluoroethylene (PTFE) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C2F4 
$  Molecular weight (g/mole) = 100.0150128 
$  Density (g/cm3) = 2.250000 
$  Total atom density (atoms/b-cm) = 8.129E-02 
$  Composition by weight fraction 
M252       6000  -0.240183       $  C
           9019  -0.759818       $  F-19
$************************************************************

$************************************************************
$  253 : Polyurethane Foam (PUR) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.021000 
$  Total atom density (atoms/b-cm) = 1.429E-03 
$  Composition by weight fraction 
M253       1001  -0.041000       $  H-1
           6000  -0.544000       $  C
           7014  -0.121000       $  N-14
           8016  -0.294000       $  O-16
$************************************************************

$************************************************************
$  254 : Polyvinyl Acetate (PVA) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C4H6O2 
$  Molecular weight (g/mole) = 86.08924 
$  Density (g/cm3) = 1.190000 
$  Total atom density (atoms/b-cm) = 9.989E-02 
$  Composition by weight fraction 
M254       1001  -0.070245       $  H-1
           6000  -0.558066       $  C
           8016  -0.371689       $  O-16
$************************************************************

$************************************************************
$  255 : Polyvinyl Chloride (PVC) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C2H3Cl 
$  Molecular weight (g/mole) = 62.49822 
$  Density (g/cm3) = 1.406000 
$  Total atom density (atoms/b-cm) = 8.129E-02 
$  Composition by weight fraction 
M255       1001  -0.048382       $  H-1
           6000  -0.384361       $  C
          17000  -0.567257       $  Cl
$************************************************************

$************************************************************
$  256 : Polyvinyl Toluene (PVT) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.032000 
$  Total atom density (atoms/b-cm) = 9.976E-02 
$  Composition by weight fraction 
M256       1001  -0.085000       $  H-1
           6000  -0.915000       $  C
$************************************************************

$************************************************************
$  257 : Polyvinylidene Chloride (PVDC) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C2H2Cl2 
$  Molecular weight (g/mole) = 96.94328 
$  Density (g/cm3) = 1.700000 
$  Total atom density (atoms/b-cm) = 6.336E-02 
$  Composition by weight fraction 
M257       1001  -0.020793       $  H-1
           6000  -0.247793       $  C
          17000  -0.731413       $  Cl
$************************************************************

$************************************************************
$  258 : Potassium Aluminum Silicate 
$  Source = PNNL-15870 Rev. 1 
$  Formula = KAlSi3O8 
$  Molecular weight (g/mole) = 278.331538 
$  Density (g/cm3) = 1.100000 
$  Total atom density (atoms/b-cm) = 3.094E-02 
$  Composition by weight fraction 
M258       8016  -0.459866       $  O-16
          13027  -0.096940       $  Al-27
          14000  -0.302720       $  Si
          19000  -0.140474       $  K
$************************************************************

$************************************************************
$  259 : Potassium Iodide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = KI 
$  Molecular weight (g/mole) = 166.00277 
$  Density (g/cm3) = 3.130000 
$  Total atom density (atoms/b-cm) = 2.271E-02 
$  Composition by weight fraction 
M259      19000  -0.235528       $  K
          53127  -0.764472       $  I-127
$************************************************************

$************************************************************
$  260 : Potassium Oxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = K2O 
$  Molecular weight (g/mole) = 94.196 
$  Density (g/cm3) = 2.320000 
$  Total atom density (atoms/b-cm) = 4.450E-02 
$  Composition by weight fraction 
M260       8016  -0.169852       $  O-16
          19000  -0.830148       $  K
$************************************************************

$************************************************************
$  261 : Propane (gas) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C3H8 
$  Molecular weight (g/mole) = 44.09562 
$  Density (g/cm3) = 0.001879 
$  Total atom density (atoms/b-cm) = 2.823E-04 
$  Composition by weight fraction 
M261       1001  -0.182855       $  H-1
           6000  -0.817145       $  C
$************************************************************

$************************************************************
$  262 : Propane (liquid) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C3H8 
$  Molecular weight (g/mole) = 44.09562 
$  Density (g/cm3) = 0.430000 
$  Total atom density (atoms/b-cm) = 6.460E-02 
$  Composition by weight fraction 
M262       1001  -0.182855       $  H-1
           6000  -0.817145       $  C
$************************************************************

$************************************************************
$  263 : P-terphenyl 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C14H10 
$  Molecular weight (g/mole) = 178.2292 
$  Density (g/cm3) = 1.230000 
$  Total atom density (atoms/b-cm) = 9.974E-02 
$  Composition by weight fraction 
M263       1001  -0.056553       $  H-1
           6000  -0.943447       $  C
$************************************************************

$************************************************************
$  264 : Radiochromic Dye Film, Nylon Base  (RDF: NB) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.080000 
$  Total atom density (atoms/b-cm) = 1.117E-01 
$  Composition by weight fraction 
M264       1001  -0.101996       $  H-1
           6000  -0.654396       $  C
           7014  -0.098915       $  N-14
           8016  -0.144693       $  O-16
$************************************************************

$************************************************************
$  265 : Rock (Average of 5 types) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.662000 
$  Total atom density (atoms/b-cm) = 8.028E-02 
$  Composition by weight fraction 
M265       1001  -0.001657       $  H-1
           6000  -0.026906       $  C
           8016  -0.488149       $  O-16
          11023  -0.012403       $  Na-23
          12000  -0.023146       $  Mg
          13027  -0.054264       $  Al-27
          14000  -0.246249       $  Si
          16000  -0.000577       $  S
          19000  -0.018147       $  K
          20000  -0.089863       $  Ca
          22000  -0.003621       $  Ti
          25055  -0.000386       $  Mn-55
          26000  -0.033377       $  Fe
          82000  -0.001255       $  Pb
$************************************************************

$************************************************************
$  266 : Rock, Basalt 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 3.010000 
$  Total atom density (atoms/b-cm) = 8.227E-02 
$  Composition by weight fraction 
M266       8016  -0.441115       $  O-16
          11023  -0.021700       $  Na-23
          12000  -0.041878       $  Mg
          13027  -0.083934       $  Al-27
          14000  -0.232811       $  Si
          19000  -0.008920       $  K
          20000  -0.068973       $  Ca
          22000  -0.011151       $  Ti
          25055  -0.001541       $  Mn-55
          26000  -0.085141       $  Fe
          82000  -0.002835       $  Pb
$************************************************************

$************************************************************
$  267 : Rock, Granite 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.690000 
$  Total atom density (atoms/b-cm) = 7.784E-02 
$  Composition by weight fraction 
M267       8016  -0.484170       $  O-16
          11023  -0.027328       $  Na-23
          12000  -0.004274       $  Mg
          13027  -0.076188       $  Al-27
          14000  -0.336169       $  Si
          19000  -0.034144       $  K
          20000  -0.012985       $  Ca
          22000  -0.001795       $  Ti
          25055  -0.000387       $  Mn-55
          26000  -0.021555       $  Fe
          82000  -0.001004       $  Pb
$************************************************************

$************************************************************
$  268 : Rock, Limestone 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.610000 
$  Total atom density (atoms/b-cm) = 8.206E-02 
$  Composition by weight fraction 
M268       1001  -0.000899       $  H-1
           6000  -0.113782       $  C
           8016  -0.497802       $  O-16
          11023  -0.000373       $  Na-23
          12000  -0.047860       $  Mg
          13027  -0.004254       $  Al-27
          14000  -0.024419       $  Si
          16000  -0.000201       $  S
          19000  -0.000334       $  K
          20000  -0.305865       $  Ca
          22000  -0.000361       $  Ti
          26000  -0.003513       $  Fe
          82000  -0.000337       $  Pb
$************************************************************

$************************************************************
$  269 : Rock, Sandstone 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.320000 
$  Total atom density (atoms/b-cm) = 7.166E-02 
$  Composition by weight fraction 
M269       1001  -0.001791       $  H-1
           6000  -0.013652       $  C
           8016  -0.519609       $  O-16
          11023  -0.002969       $  Na-23
          12000  -0.007240       $  Mg
          13027  -0.025417       $  Al-27
          14000  -0.366185       $  Si
          16000  -0.000280       $  S
          19000  -0.011628       $  K
          20000  -0.039328       $  Ca
          22000  -0.001199       $  Ti
          26000  -0.010031       $  Fe
          82000  -0.000671       $  Pb
$************************************************************

$************************************************************
$  270 : Rock, Shale 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 2.680000 
$  Total atom density (atoms/b-cm) = 8.625E-02 
$  Composition by weight fraction 
M270       1001  -0.005597       $  H-1
           6000  -0.007098       $  C
           8016  -0.498049       $  O-16
          11023  -0.009647       $  Na-23
          12000  -0.014477       $  Mg
          13027  -0.081529       $  Al-27
          14000  -0.271661       $  Si
          16000  -0.002404       $  S
          19000  -0.035707       $  K
          20000  -0.022162       $  Ca
          22000  -0.003597       $  Ti
          26000  -0.046646       $  Fe
          82000  -0.001425       $  Pb
$************************************************************

$************************************************************
$  271 : Rubber, Butyl 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.920000 
$  Total atom density (atoms/b-cm) = 1.185E-01 
$  Composition by weight fraction 
M271       1001  -0.143711       $  H-1
           6000  -0.856289       $  C
$************************************************************

$************************************************************
$  272 : Rubber, Natural 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C5H8 
$  Molecular weight (g/mole) = 68.11702 
$  Density (g/cm3) = 0.920000 
$  Total atom density (atoms/b-cm) = 1.057E-01 
$  Composition by weight fraction 
M272       1001  -0.118371       $  H-1
           6000  -0.881629       $  C
$************************************************************

$************************************************************
$  273 : Rubber, Neoprene 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C4H5Cl 
$  Molecular weight (g/mole) = 88.5355 
$  Density (g/cm3) = 1.230000 
$  Total atom density (atoms/b-cm) = 8.366E-02 
$  Composition by weight fraction 
M273       1001  -0.056920       $  H-1
           6000  -0.542646       $  C
          17000  -0.400434       $  Cl
$************************************************************

$************************************************************
$  274 : Rubber, Silicon 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.018500 
$  Total atom density (atoms/b-cm) = 8.227E-02 
$  Composition by weight fraction 
M274       1001  -0.080716       $  H-1
           6000  -0.321164       $  C
           8016  -0.223545       $  O-16
          14000  -0.374575       $  Si
$************************************************************

$************************************************************
$  275 : Salt Water (T=0 C) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = H2O:NaCl 
$  Density (g/cm3) = 1.209865 
$  Total atom density (atoms/b-cm) = 9.600E-02 
$  Composition by weight fraction 
M275       1001  -0.082491       $  H-1
           8016  -0.654709       $  O-16
          11023  -0.103378       $  Na-23
          17000  -0.159422       $  Cl
$************************************************************

$************************************************************
$  276 : Salt Water (T=20 C) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = H2O:NaCl 
$  Density (g/cm3) = 1.022394 
$  Total atom density (atoms/b-cm) = 9.978E-02 
$  Composition by weight fraction 
M276       1001  -0.108114       $  H-1
           8016  -0.858069       $  O-16
          11023  -0.013302       $  Na-23
          17000  -0.020514       $  Cl
$************************************************************

$************************************************************
$  277 : Sand 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.700000 
$  Total atom density (atoms/b-cm) = 5.876E-02 
$  Composition by weight fraction 
M277       1001  -0.007833       $  H-1
           6000  -0.003360       $  C
           8016  -0.536153       $  O-16
          11023  -0.017063       $  Na-23
          13027  -0.034401       $  Al-27
          14000  -0.365067       $  Si
          19000  -0.011622       $  K
          20000  -0.011212       $  Ca
          26000  -0.013289       $  Fe
$************************************************************

$************************************************************
$  278 : Sea Water, Simple Artificial 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.023343 
$  Total atom density (atoms/b-cm) = 9.979E-02 
$  Composition by weight fraction 
M278       1001  -0.107974       $  H-1
           8016  -0.858765       $  O-16
          11023  -0.010785       $  Na-23
          12000  -0.001284       $  Mg
          16000  -0.000906       $  S
          17000  -0.019472       $  Cl
          19000  -0.000399       $  K
          20000  -0.000415       $  Ca
$************************************************************

$************************************************************
$  279 : Sea Water, Standard 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.023343 
$  Total atom density (atoms/b-cm) = 9.979E-02 
$  Composition by weight fraction 
M279       1001  -0.107979       $  H-1
           5000  -0.000005       $  B
           8016  -0.858803       $  O-16
           9019  -0.000001       $  F-19
          11023  -0.010784       $  Na-23
          12000  -0.001284       $  Mg
          16000  -0.000905       $  S
          17000  -0.019352       $  Cl
          19000  -0.000399       $  K
          20000  -0.000412       $  Ca
          35000  -0.000067       $  Br
          38000  -0.000008       $  Sr
$************************************************************

$************************************************************
$  280 : Sepiolite 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Mg4Si6O15(OH)2-6(H2O) 
$  Molecular weight (g/mole) = 647.83036 
$  Density (g/cm3) = 2.140000 
$  Total atom density (atoms/b-cm) = 9.350E-02 
$  Composition by weight fraction 
M280       1001  -0.021782       $  H-1
           8016  -0.568029       $  O-16
          12000  -0.150070       $  Mg
          14000  -0.260119       $  Si
$************************************************************

$************************************************************
$  281 : Silicon 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Si 
$  Molecular weight (g/mole) = 28.0855 
$  Density (g/cm3) = 2.330000 
$  Total atom density (atoms/b-cm) = 4.996E-02 
$  Composition by weight fraction 
M281      14000  -1.000000       $  Si
$************************************************************

$************************************************************
$  282 : Silicon Carbide (hexagonal) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = SiC 
$  Molecular weight (g/mole) = 40.0962 
$  Density (g/cm3) = 3.210000 
$  Total atom density (atoms/b-cm) = 9.642E-02 
$  Composition by weight fraction 
M282       6000  -0.299547       $  C
          14000  -0.700453       $  Si
$************************************************************

$************************************************************
$  283 : Silicon Dioxide (Alpha-quartz) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = SiO2 
$  Molecular weight (g/mole) = 60.0843 
$  Density (g/cm3) = 2.648000 
$  Total atom density (atoms/b-cm) = 7.962E-02 
$  Composition by weight fraction 
M283       8016  -0.532565       $  O-16
          14000  -0.467435       $  Si
$************************************************************

$************************************************************
$  284 : Silicon Dioxide (Silica) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = SiO2 
$  Molecular weight (g/mole) = 60.0843 
$  Density (g/cm3) = 2.320000 
$  Total atom density (atoms/b-cm) = 6.976E-02 
$  Composition by weight fraction 
M284       8016  -0.532565       $  O-16
          14000  -0.467435       $  Si
$************************************************************

$************************************************************
$  285 : Silver 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Ag 
$  Molecular weight (g/mole) = 107.8682 
$  Density (g/cm3) = 10.500000 
$  Total atom density (atoms/b-cm) = 5.862E-02 
$  Composition by weight fraction 
M285      47000  -1.000000       $  Ag
$************************************************************

$************************************************************
$  286 : Skin (ICRP) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.100000 
$  Total atom density (atoms/b-cm) = 1.066E-01 
$  Composition by weight fraction 
M286       1001  -0.100588       $  H-1
           6000  -0.228250       $  C
           7014  -0.046420       $  N-14
           8016  -0.619002       $  O-16
          11023  -0.000070       $  Na-23
          12000  -0.000060       $  Mg
          15031  -0.000330       $  P-31
          16000  -0.001590       $  S
          17000  -0.002670       $  Cl
          19000  -0.000850       $  K
          20000  -0.000150       $  Ca
          26000  -0.000010       $  Fe
          30000  -0.000010       $  Zn
$************************************************************

$************************************************************
$  287 : Sodium 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Na 
$  Molecular weight (g/mole) = 22.98977 
$  Density (g/cm3) = 0.971000 
$  Total atom density (atoms/b-cm) = 2.544E-02 
$  Composition by weight fraction 
M287      11023  -1.000000       $  Na-23
$************************************************************

$************************************************************
$  288 : Sodium Bismuth Tungstate (NBWO) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = NaBi(WO4)2 
$  Molecular weight (g/mole) = 727.64535 
$  Density (g/cm3) = 7.570000 
$  Total atom density (atoms/b-cm) = 7.518E-02 
$  Composition by weight fraction 
M288       8016  -0.175903       $  O-16
          11023  -0.031595       $  Na-23
          74000  -0.505301       $  W
          83209  -0.287201       $  Bi-209
$************************************************************

$************************************************************
$  289 : Sodium Chloride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = NaCl 
$  Molecular weight (g/mole) = 58.44277 
$  Density (g/cm3) = 2.170000 
$  Total atom density (atoms/b-cm) = 4.472E-02 
$  Composition by weight fraction 
M289      11023  -0.393372       $  Na-23
          17000  -0.606628       $  Cl
$************************************************************

$************************************************************
$  290 : Sodium Iodide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = NaI 
$  Molecular weight (g/mole) = 149.89424 
$  Density (g/cm3) = 3.667000 
$  Total atom density (atoms/b-cm) = 2.947E-02 
$  Composition by weight fraction 
M290      11023  -0.153373       $  Na-23
          53127  -0.846627       $  I-127
$************************************************************

$************************************************************
$  291 : Sodium Nitrate 
$  Source = PNNL-15870 Rev. 1 
$  Formula = NaNO3 
$  Molecular weight (g/mole) = 84.99467 
$  Density (g/cm3) = 2.261000 
$  Total atom density (atoms/b-cm) = 8.010E-02 
$  Composition by weight fraction 
M291       7014  -0.164795       $  N-14
           8016  -0.564720       $  O-16
          11023  -0.270485       $  Na-23
$************************************************************

$************************************************************
$  292 : Sodium Oxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Na2O 
$  Molecular weight (g/mole) = 61.97894 
$  Density (g/cm3) = 2.270000 
$  Total atom density (atoms/b-cm) = 6.617E-02 
$  Composition by weight fraction 
M292       8016  -0.258143       $  O-16
          11023  -0.741857       $  Na-23
$************************************************************

$************************************************************
$  293 : Steel, Boron Stainless 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 7.870000 
$  Total atom density (atoms/b-cm) = 8.978E-02 
$  Composition by weight fraction 
M293       5000  -0.010000       $  B
           6000  -0.000396       $  C
          14000  -0.004950       $  Si
          15031  -0.000228       $  P-31
          16000  -0.000149       $  S
          24000  -0.188100       $  Cr
          25055  -0.009900       $  Mn-55
          26000  -0.694713       $  Fe
          28000  -0.091575       $  Ni
$************************************************************

$************************************************************
$  294 : Steel, Carbon 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 7.820000 
$  Total atom density (atoms/b-cm) = 8.587E-02 
$  Composition by weight fraction 
M294       6000  -0.005000       $  C
          26000  -0.995000       $  Fe
$************************************************************

$************************************************************
$  295 : Steel, HT9 Stainless 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 7.874000 
$  Total atom density (atoms/b-cm) = 8.598E-02 
$  Composition by weight fraction 
M295       6000  -0.002000       $  C
          14000  -0.004000       $  Si
          15031  -0.000300       $  P-31
          16000  -0.000200       $  S
          23000  -0.003000       $  V
          24000  -0.115000       $  Cr
          25055  -0.006000       $  Mn-55
          26000  -0.849500       $  Fe
          28000  -0.005000       $  Ni
          42000  -0.010000       $  Mo
          74000  -0.005000       $  W
$************************************************************

$************************************************************
$  296 : Steel, Stainless 202 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 7.860000 
$  Total atom density (atoms/b-cm) = 8.680E-02 
$  Composition by weight fraction 
M296       6000  -0.000750       $  C
           7014  -0.001250       $  N-14
          14000  -0.005000       $  Si
          15031  -0.000300       $  P-31
          16000  -0.000150       $  S
          24000  -0.180000       $  Cr
          25055  -0.087500       $  Mn-55
          26000  -0.675050       $  Fe
          28000  -0.050000       $  Ni
$************************************************************

$************************************************************
$  297 : Steel, Stainless 302 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 7.860000 
$  Total atom density (atoms/b-cm) = 8.680E-02 
$  Composition by weight fraction 
M297       6000  -0.001400       $  C
          14000  -0.009300       $  Si
          15031  -0.000420       $  P-31
          16000  -0.000280       $  S
          24000  -0.180000       $  Cr
          25055  -0.018600       $  Mn-55
          26000  -0.700000       $  Fe
          28000  -0.090000       $  Ni
$************************************************************

$************************************************************
$  298 : Steel, Stainless 304 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 8.000000 
$  Total atom density (atoms/b-cm) = 8.769E-02 
$  Composition by weight fraction 
M298       6000  -0.000400       $  C
          14000  -0.005000       $  Si
          15031  -0.000230       $  P-31
          16000  -0.000150       $  S
          24000  -0.190000       $  Cr
          25055  -0.010000       $  Mn-55
          26000  -0.701730       $  Fe
          28000  -0.092500       $  Ni
$************************************************************

$************************************************************
$  299 : Steel, Stainless 304L 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 8.000000 
$  Total atom density (atoms/b-cm) = 8.758E-02 
$  Composition by weight fraction 
M299       6000  -0.000150       $  C
          14000  -0.005000       $  Si
          15031  -0.000230       $  P-31
          16000  -0.000150       $  S
          24000  -0.190000       $  Cr
          25055  -0.010000       $  Mn-55
          26000  -0.694480       $  Fe
          28000  -0.100000       $  Ni
$************************************************************

$************************************************************
$  300 : Steel, Stainless 316 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 8.000000 
$  Total atom density (atoms/b-cm) = 8.655E-02 
$  Composition by weight fraction 
M300       6000  -0.000410       $  C
          14000  -0.005070       $  Si
          15031  -0.000230       $  P-31
          16000  -0.000150       $  S
          24000  -0.170000       $  Cr
          25055  -0.010140       $  Mn-55
          26000  -0.669000       $  Fe
          28000  -0.120000       $  Ni
          42000  -0.025000       $  Mo
$************************************************************

$************************************************************
$  301 : Steel, Stainless 316L 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 8.000000 
$  Total atom density (atoms/b-cm) = 8.698E-02 
$  Composition by weight fraction 
M301       6000  -0.000300       $  C
          14000  -0.010000       $  Si
          15031  -0.000450       $  P-31
          16000  -0.000300       $  S
          24000  -0.170000       $  Cr
          25055  -0.020000       $  Mn-55
          26000  -0.653950       $  Fe
          28000  -0.120000       $  Ni
          42000  -0.025000       $  Mo
$************************************************************

$************************************************************
$  302 : Steel, Stainless 321 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 8.000000 
$  Total atom density (atoms/b-cm) = 8.816E-02 
$  Composition by weight fraction 
M302       6000  -0.000800       $  C
          14000  -0.010000       $  Si
          15031  -0.000450       $  P-31
          16000  -0.000300       $  S
          22000  -0.001500       $  Ti
          24000  -0.180000       $  Cr
          25055  -0.020000       $  Mn-55
          26000  -0.676950       $  Fe
          28000  -0.110000       $  Ni
$************************************************************

$************************************************************
$  303 : Steel, Stainless 347 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 8.000000 
$  Total atom density (atoms/b-cm) = 8.770E-02 
$  Composition by weight fraction 
M303       6000  -0.000800       $  C
          14000  -0.010000       $  Si
          15031  -0.000450       $  P-31
          16000  -0.000300       $  S
          24000  -0.170000       $  Cr
          25055  -0.020000       $  Mn-55
          26000  -0.680450       $  Fe
          28000  -0.110000       $  Ni
          41093  -0.004000       $  Nb-93
          73181  -0.004000       $  Ta-181
$************************************************************

$************************************************************
$  304 : Steel, Stainless 409 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 7.800000 
$  Total atom density (atoms/b-cm) = 8.604E-02 
$  Composition by weight fraction 
M304       6000  -0.000790       $  C
          14000  -0.009830       $  Si
          15031  -0.000440       $  P-31
          16000  -0.000440       $  S
          22000  -0.007370       $  Ti
          24000  -0.111300       $  Cr
          25055  -0.009830       $  Mn-55
          26000  -0.860000       $  Fe
$************************************************************

$************************************************************
$  305 : Steel, Stainless 440 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 7.800000 
$  Total atom density (atoms/b-cm) = 8.682E-02 
$  Composition by weight fraction 
M305       6000  -0.006750       $  C
          14000  -0.006500       $  Si
          15031  -0.000260       $  P-31
          16000  -0.000200       $  S
          24000  -0.170000       $  Cr
          25055  -0.006500       $  Mn-55
          26000  -0.795050       $  Fe
          42000  -0.004880       $  Mo
$************************************************************

$************************************************************
$  306 : Sterotex 
$  Source = PNNL-15870 Rev. 1 
$  Formula = (C17H35CO2)3-C3H5 
$  Molecular weight (g/mole) = 891.4797 
$  Density (g/cm3) = 0.862000 
$  Total atom density (atoms/b-cm) = 1.007E-01 
$  Composition by weight fraction 
M306       1001  -0.124370       $  H-1
           6000  -0.767948       $  C
           8016  -0.107682       $  O-16
$************************************************************

$************************************************************
$  307 : Stilbene (trans-stilbene isomer) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C14H10 
$  Molecular weight (g/mole) = 178.2292 
$  Density (g/cm3) = 1.220000 
$  Total atom density (atoms/b-cm) = 9.893E-02 
$  Composition by weight fraction 
M307       1001  -0.056553       $  H-1
           6000  -0.943447       $  C
$************************************************************

$************************************************************
$  308 : Sulphur 
$  Source = PNNL-15870 Rev. 1 
$  Formula = S 
$  Molecular weight (g/mole) = 32.065 
$  Density (g/cm3) = 2.000000 
$  Total atom density (atoms/b-cm) = 3.756E-02 
$  Composition by weight fraction 
M308      16000  -1.000000       $  S
$************************************************************

$************************************************************
$  309 : Tantalum 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Ta 
$  Molecular weight (g/mole) = 180.9479 
$  Density (g/cm3) = 16.654000 
$  Total atom density (atoms/b-cm) = 5.543E-02 
$  Composition by weight fraction 
M309      73181  -1.000000       $  Ta-181
$************************************************************

$************************************************************
$  310 : Thorium 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Th 
$  Molecular weight (g/mole) = 232.0381 
$  Density (g/cm3) = 11.720000 
$  Total atom density (atoms/b-cm) = 3.042E-02 
$  Composition by weight fraction 
M310      90232  -1.000000       $  Th-232
$************************************************************

$************************************************************
$  311 : Thorium Dioxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = ThO2 
$  Molecular weight (g/mole) = 264.0369 
$  Density (g/cm3) = 10.000000 
$  Total atom density (atoms/b-cm) = 6.842E-02 
$  Composition by weight fraction 
M311       8016  -0.121191       $  O-16
          90232  -0.878809       $  Th-232
$************************************************************

$************************************************************
$  312 : Tin 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Sn 
$  Molecular weight (g/mole) = 118.71 
$  Density (g/cm3) = 7.310000 
$  Total atom density (atoms/b-cm) = 3.708E-02 
$  Composition by weight fraction 
M312      50000  -1.000000       $  Sn
$************************************************************

$************************************************************
$  313 : Tissue Equivalent, MS20 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.000000 
$  Total atom density (atoms/b-cm) = 8.879E-02 
$  Composition by weight fraction 
M313       1001  -0.081192       $  H-1
           6000  -0.583442       $  C
           7014  -0.017798       $  N-14
           8016  -0.186381       $  O-16
          12000  -0.130287       $  Mg
          17000  -0.000900       $  Cl
$************************************************************

$************************************************************
$  314 : Tissue Equivalent-Gas, methane based  (TEG: MB) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.001064 
$  Total atom density (atoms/b-cm) = 1.070E-04 
$  Composition by weight fraction 
M314       1001  -0.101869       $  H-1
           6000  -0.456179       $  C
           7014  -0.035172       $  N-14
           8016  -0.406780       $  O-16
$************************************************************

$************************************************************
$  315 : Tissue Equivalent-Gas, propane based  (TEG: PB) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.001826 
$  Total atom density (atoms/b-cm) = 1.870E-04 
$  Composition by weight fraction 
M315       1001  -0.102672       $  H-1
           6000  -0.568940       $  C
           7014  -0.035022       $  N-14
           8016  -0.293366       $  O-16
$************************************************************

$************************************************************
$  316 : Tissue, Adipose (ICRP) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.920000 
$  Total atom density (atoms/b-cm) = 1.035E-01 
$  Composition by weight fraction 
M316       1001  -0.119477       $  H-1
           6000  -0.637240       $  C
           7014  -0.007970       $  N-14
           8016  -0.232333       $  O-16
          11023  -0.000500       $  Na-23
          12000  -0.000020       $  Mg
          15031  -0.000160       $  P-31
          16000  -0.000730       $  S
          17000  -0.001190       $  Cl
          19000  -0.000320       $  K
          20000  -0.000020       $  Ca
          26000  -0.000020       $  Fe
          30000  -0.000020       $  Zn
$************************************************************

$************************************************************
$  317 : Tissue, Breast 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.020000 
$  Total atom density (atoms/b-cm) = 1.032E-01 
$  Composition by weight fraction 
M317       1001  -0.106000       $  H-1
           6000  -0.332000       $  C
           7014  -0.030000       $  N-14
           8016  -0.527000       $  O-16
          11023  -0.001000       $  Na-23
          15031  -0.001000       $  P-31
          16000  -0.002000       $  S
          17000  -0.001000       $  Cl
$************************************************************

$************************************************************
$  318 : Tissue, Lung (ICRP) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.050000 
$  Total atom density (atoms/b-cm) = 1.004E-01 
$  Composition by weight fraction 
M318       1001  -0.101278       $  H-1
           6000  -0.102310       $  C
           7014  -0.028650       $  N-14
           8016  -0.757072       $  O-16
          11023  -0.001840       $  Na-23
          12000  -0.000730       $  Mg
          15031  -0.000800       $  P-31
          16000  -0.002250       $  S
          17000  -0.002660       $  Cl
          19000  -0.001940       $  K
          20000  -0.000090       $  Ca
          26000  -0.000370       $  Fe
          30000  -0.000010       $  Zn
$************************************************************

$************************************************************
$  319 : Tissue, Ovary 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.050000 
$  Total atom density (atoms/b-cm) = 1.024E-01 
$  Composition by weight fraction 
M319       1001  -0.105000       $  H-1
           6000  -0.093000       $  C
           7014  -0.024000       $  N-14
           8016  -0.768000       $  O-16
          11023  -0.002000       $  Na-23
          15031  -0.002000       $  P-31
          16000  -0.002000       $  S
          17000  -0.002000       $  Cl
          19000  -0.002000       $  K
$************************************************************

$************************************************************
$  320 : Tissue, Soft (ICRP) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.000000 
$  Total atom density (atoms/b-cm) = 9.901E-02 
$  Composition by weight fraction 
M320       1001  -0.104472       $  H-1
           6000  -0.232190       $  C
           7014  -0.024880       $  N-14
           8016  -0.630238       $  O-16
          11023  -0.001130       $  Na-23
          12000  -0.000130       $  Mg
          15031  -0.001330       $  P-31
          16000  -0.001990       $  S
          17000  -0.001340       $  Cl
          19000  -0.001990       $  K
          20000  -0.000230       $  Ca
          26000  -0.000050       $  Fe
          30000  -0.000030       $  Zn
$************************************************************

$************************************************************
$  321 : Tissue, Soft (ICRU four component) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.000000 
$  Total atom density (atoms/b-cm) = 9.581E-02 
$  Composition by weight fraction 
M321       1001  -0.101172       $  H-1
           6000  -0.111000       $  C
           7014  -0.026000       $  N-14
           8016  -0.761828       $  O-16
$************************************************************

$************************************************************
$  322 : Tissue, Testes (ICRP) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.040000 
$  Total atom density (atoms/b-cm) = 1.009E-01 
$  Composition by weight fraction 
M322       1001  -0.104166       $  H-1
           6000  -0.092270       $  C
           7014  -0.019940       $  N-14
           8016  -0.773884       $  O-16
          11023  -0.002260       $  Na-23
          12000  -0.000110       $  Mg
          15031  -0.001250       $  P-31
          16000  -0.001460       $  S
          17000  -0.002440       $  Cl
          19000  -0.002080       $  K
          20000  -0.000100       $  Ca
          26000  -0.000020       $  Fe
          30000  -0.000020       $  Zn
$************************************************************

$************************************************************
$  323 : Tissue, Testis (ICRU) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.040000 
$  Total atom density (atoms/b-cm) = 1.021E-01 
$  Composition by weight fraction 
M323       1001  -0.106000       $  H-1
           6000  -0.099000       $  C
           7014  -0.020000       $  N-14
           8016  -0.766000       $  O-16
          11023  -0.002000       $  Na-23
          15031  -0.001000       $  P-31
          16000  -0.002000       $  S
          17000  -0.002000       $  Cl
          19000  -0.002000       $  K
$************************************************************

$************************************************************
$  324 : Titanium 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Ti 
$  Molecular weight (g/mole) = 47.867 
$  Density (g/cm3) = 4.540000 
$  Total atom density (atoms/b-cm) = 5.712E-02 
$  Composition by weight fraction 
M324      22000  -1.000000       $  Ti
$************************************************************

$************************************************************
$  325 : Titanium alloy, grade 5 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 4.430000 
$  Total atom density (atoms/b-cm) = 5.878E-02 
$  Composition by weight fraction 
M325       1001  -0.000110       $  H-1
           6000  -0.000570       $  C
           7014  -0.000210       $  N-14
           8016  -0.001410       $  O-16
          13027  -0.061250       $  Al-27
          22000  -0.893630       $  Ti
          23000  -0.040000       $  V
          26000  -0.002830       $  Fe
$************************************************************

$************************************************************
$  326 : Titanium Dioxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = TiO2 
$  Molecular weight (g/mole) = 79.8658 
$  Density (g/cm3) = 4.260000 
$  Total atom density (atoms/b-cm) = 9.636E-02 
$  Composition by weight fraction 
M326       8016  -0.400592       $  O-16
          22000  -0.599408       $  Ti
$************************************************************

$************************************************************
$  327 : Titanium Hydride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = TiH2 
$  Molecular weight (g/mole) = 49.88288 
$  Density (g/cm3) = 3.750000 
$  Total atom density (atoms/b-cm) = 1.358E-01 
$  Composition by weight fraction 
M327       1001  -0.040412       $  H-1
          22000  -0.959588       $  Ti
$************************************************************

$************************************************************
$  328 : Toluene 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C7H8 
$  Molecular weight (g/mole) = 92.13842 
$  Density (g/cm3) = 0.866900 
$  Total atom density (atoms/b-cm) = 8.499E-02 
$  Composition by weight fraction 
M328       1001  -0.087510       $  H-1
           6000  -0.912490       $  C
$************************************************************

$************************************************************
$  329 : Tributyl Borate 
$  Source = PNNL-15870 Rev. 1 
$  Formula = B(OC4H9)3 
$  Molecular weight (g/mole) = 230.15198 
$  Density (g/cm3) = 0.864000 
$  Total atom density (atoms/b-cm) = 9.721E-02 
$  Composition by weight fraction 
M329       1001  -0.118245       $  H-1
           5000  -0.046973       $  B
           6000  -0.626231       $  C
           8016  -0.208550       $  O-16
$************************************************************

$************************************************************
$  330 : Tributyl Phosphate (TBP) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = (C4H9)3PO4 
$  Molecular weight (g/mole) = 266.314141 
$  Density (g/cm3) = 0.972400 
$  Total atom density (atoms/b-cm) = 9.675E-02 
$  Composition by weight fraction 
M330       1001  -0.102189       $  H-1
           6000  -0.541197       $  C
           8016  -0.240309       $  O-16
          15031  -0.116305       $  P-31
$************************************************************

$************************************************************
$  331 : Tungsten 
$  Source = PNNL-15870 Rev. 1 
$  Formula = W 
$  Molecular weight (g/mole) = 183.84 
$  Density (g/cm3) = 19.300000 
$  Total atom density (atoms/b-cm) = 6.322E-02 
$  Composition by weight fraction 
M331      74000  -1.000000       $  W
$************************************************************

$************************************************************
$  332 : Uranium Carbide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = UC 
$  Molecular weight (g/mole) = 249.9687908998 
$  Density (g/cm3) = 13.630000 
$  Total atom density (atoms/b-cm) = 6.567E-02 
$  Composition by weight fraction 
M332       6000  -0.048049       $  C
          92234  -0.000254       $  U-234
          92235  -0.028559       $  U-235
          92236  -0.000131       $  U-236
          92238  -0.923007       $  U-238
$************************************************************

$************************************************************
$  333 : Uranium Dicarbide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = UC2 
$  Molecular weight (g/mole) = 261.9794908998 
$  Density (g/cm3) = 11.280000 
$  Total atom density (atoms/b-cm) = 7.779E-02 
$  Composition by weight fraction 
M333       6000  -0.091692       $  C
          92234  -0.000243       $  U-234
          92235  -0.027249       $  U-235
          92236  -0.000125       $  U-236
          92238  -0.880691       $  U-238
$************************************************************

$************************************************************
$  334 : Uranium Dioxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = UO2 
$  Molecular weight (g/mole) = 269.9568908998 
$  Density (g/cm3) = 10.960000 
$  Total atom density (atoms/b-cm) = 7.335E-02 
$  Composition by weight fraction 
M334       8016  -0.118533       $  O-16
          92234  -0.000235       $  U-234
          92235  -0.026444       $  U-235
          92236  -0.000122       $  U-236
          92238  -0.854666       $  U-238
$************************************************************

$************************************************************
$  335 : Uranium Hexafluoride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = UF6 
$  Molecular weight (g/mole) = 351.9485100998 
$  Density (g/cm3) = 4.680000 
$  Total atom density (atoms/b-cm) = 5.606E-02 
$  Composition by weight fraction 
M335       9019  -0.323884       $  F-19
          92234  -0.000181       $  U-234
          92235  -0.020283       $  U-235
          92236  -0.000093       $  U-236
          92238  -0.655559       $  U-238
$************************************************************

$************************************************************
$  336 : Uranium Hydride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = UH3 
$  Molecular weight (g/mole) = 240.9819108998 
$  Density (g/cm3) = 11.100000 
$  Total atom density (atoms/b-cm) = 1.110E-01 
$  Composition by weight fraction 
M336       1001  -0.012548       $  H-1
          92234  -0.000264       $  U-234
          92235  -0.029624       $  U-235
          92236  -0.000136       $  U-236
          92238  -0.957429       $  U-238
$************************************************************

$************************************************************
$  337 : Uranium Nitride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = UN 
$  Molecular weight (g/mole) = 251.9647908998 
$  Density (g/cm3) = 14.310000 
$  Total atom density (atoms/b-cm) = 6.840E-02 
$  Composition by weight fraction 
M337       7014  -0.055590       $  N-14
          92234  -0.000252       $  U-234
          92235  -0.028332       $  U-235
          92236  -0.000130       $  U-236
          92238  -0.915695       $  U-238
$************************************************************

$************************************************************
$  338 : Uranium Oxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = U3O8 
$  Molecular weight (g/mole) = 841.8694726993 
$  Density (g/cm3) = 8.300000 
$  Total atom density (atoms/b-cm) = 6.531E-02 
$  Composition by weight fraction 
M338       8016  -0.152037       $  O-16
          92234  -0.000226       $  U-234
          92235  -0.025439       $  U-235
          92236  -0.000117       $  U-236
          92238  -0.822181       $  U-238
$************************************************************

$************************************************************
$  339 : Uranium Tetrafluoride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = UF4 
$  Molecular weight (g/mole) = 313.9517036998 
$  Density (g/cm3) = 6.700000 
$  Total atom density (atoms/b-cm) = 6.426E-02 
$  Composition by weight fraction 
M339       9019  -0.242055       $  F-19
          92234  -0.000202       $  U-234
          92235  -0.022738       $  U-235
          92236  -0.000105       $  U-236
          92238  -0.734900       $  U-238
$************************************************************

$************************************************************
$  340 : Uranium Trioxide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = UO3 
$  Molecular weight (g/mole) = 285.9562908998 
$  Density (g/cm3) = 7.290000 
$  Total atom density (atoms/b-cm) = 6.141E-02 
$  Composition by weight fraction 
M340       8016  -0.167852       $  O-16
          92234  -0.000222       $  U-234
          92235  -0.024964       $  U-235
          92236  -0.000115       $  U-236
          92238  -0.806847       $  U-238
$************************************************************

$************************************************************
$  341 : Uranium, Depleted, Typical 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 18.951157 
$  Total atom density (atoms/b-cm) = 4.794E-02 
$  Composition by weight fraction 
M341      92234  -0.000005       $  U-234
          92235  -0.002500       $  U-235
          92238  -0.997495       $  U-238
$************************************************************

$************************************************************
$  342 : Uranium, Enriched, Typical Commercial 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 18.944492 
$  Total atom density (atoms/b-cm) = 4.794E-02 
$  Composition by weight fraction 
M342      92234  -0.000305       $  U-234
          92235  -0.029600       $  U-235
          92238  -0.970095       $  U-238
$************************************************************

$************************************************************
$  343 : Uranium, HEU, Health Physics Society 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 18.724868 
$  Total atom density (atoms/b-cm) = 4.794E-02 
$  Composition by weight fraction 
M343      92234  -0.010530       $  U-234
          92235  -0.931740       $  U-235
          92236  -0.002060       $  U-236
          92238  -0.055670       $  U-238
$************************************************************

$************************************************************
$  344 : Uranium, HEU, Russian Average 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 18.732854 
$  Total atom density (atoms/b-cm) = 4.794E-02 
$  Composition by weight fraction 
M344      92234  -0.009670       $  U-234
          92235  -0.898000       $  U-235
          92236  -0.003810       $  U-236
          92238  -0.088520       $  U-238
$************************************************************

$************************************************************
$  345 : Uranium, HEU, US Average 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 18.724760 
$  Total atom density (atoms/b-cm) = 4.794E-02 
$  Composition by weight fraction 
M345      92234  -0.009800       $  U-234
          92235  -0.931550       $  U-235
          92236  -0.004500       $  U-236
          92238  -0.054150       $  U-238
$************************************************************

$************************************************************
$  346 : Uranium, Low Enriched (LEU) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = U 
$  Density (g/cm3) = 18.944386 
$  Total atom density (atoms/b-cm) = 4.794E-02 
$  Composition by weight fraction 
M346      92234  -0.000267       $  U-234
          92235  -0.030000       $  U-235
          92236  -0.000138       $  U-236
          92238  -0.969595       $  U-238
$************************************************************

$************************************************************
$  347 : Uranium, Natural (NU) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 18.950000 
$  Total atom density (atoms/b-cm) = 4.794E-02 
$  Composition by weight fraction 
M347      92234  -0.000057       $  U-234
          92235  -0.007204       $  U-235
          92238  -0.992739       $  U-238
$************************************************************

$************************************************************
$  348 : Uranium-Plutonium, Mixed Oxide (MOX) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 11.000000 
$  Total atom density (atoms/b-cm) = 7.357E-02 
$  Composition by weight fraction 
M348       8016  -0.118462       $  O-16
          92234  -0.000010       $  U-234
          92235  -0.002101       $  U-235
          92236  0.000000        $  U-236
          92238  -0.838236       $  U-238
          94238  -0.001030       $  Pu-238
          94239  -0.022532       $  Pu-239
          94240  -0.010751       $  Pu-240
          94241  -0.003913       $  Pu-241
          94242  -0.002966       $  Pu-242
$************************************************************

$************************************************************
$  349 : Uranyl Fluoride 
$  Source = PNNL-15870 Rev. 1 
$  Formula = UO2F2 
$  Molecular weight (g/mole) = 307.9536972998 
$  Density (g/cm3) = 6.370000 
$  Total atom density (atoms/b-cm) = 6.228E-02 
$  Composition by weight fraction 
M349       8016  -0.103908       $  O-16
           9019  -0.123385       $  F-19
          92234  -0.000206       $  U-234
          92235  -0.023181       $  U-235
          92236  -0.000107       $  U-236
          92238  -0.749213       $  U-238
$************************************************************

$************************************************************
$  350 : Uranyl Nitrate 
$  Source = PNNL-15870 Rev. 1 
$  Formula = UO2(NO3)2 
$  Molecular weight (g/mole) = 393.9666908998 
$  Density (g/cm3) = 2.203000 
$  Total atom density (atoms/b-cm) = 3.704E-02 
$  Composition by weight fraction 
M350       7014  -0.071106       $  N-14
           8016  -0.324888       $  O-16
          92234  -0.000161       $  U-234
          92235  -0.018120       $  U-235
          92236  -0.000083       $  U-236
          92238  -0.585641       $  U-238
$************************************************************

$************************************************************
$  351 : Vermiculite, Exfoliated 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.085000 
$  Total atom density (atoms/b-cm) = 3.048E-03 
$  Composition by weight fraction 
M351       1001  -0.011835       $  H-1
           8016  -0.496356       $  O-16
          12000  -0.133383       $  Mg
          13027  -0.063151       $  Al-27
          14000  -0.189668       $  Si
          19000  -0.021668       $  K
          20000  -0.016353       $  Ca
          22000  -0.009854       $  Ti
          26000  -0.057732       $  Fe
$************************************************************

$************************************************************
$  352 : Viton Fluoroelastomer 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.800000 
$  Total atom density (atoms/b-cm) = 7.596E-02 
$  Composition by weight fraction 
M352       1001  -0.009417       $  H-1
           6000  -0.280555       $  C
           9019  -0.710028       $  F-19
$************************************************************

$************************************************************
$  353 : Water, Heavy 
$  Source = PNNL-15870 Rev. 1 
$  Formula = D2O 
$  Molecular weight (g/mole) = 20.027603556 
$  Density (g/cm3) = 1.105340 
$  Total atom density (atoms/b-cm) = 9.971E-02 
$  Composition by weight fraction 
M353       1002  -0.201133       $  H-2
           8016  -0.798867       $  O-16
$************************************************************

$************************************************************
$  354 : Water, Liquid 
$  Source = PNNL-15870 Rev. 1 
$  Formula = H2O 
$  Molecular weight (g/mole) = 18.01528 
$  Density (g/cm3) = 0.998207 
$  Total atom density (atoms/b-cm) = 1.001E-01 
$  Composition by weight fraction 
M354       1001  -0.111894       $  H-1
           8016  -0.888106       $  O-16
$************************************************************

$************************************************************
$  355 : Water, Vapor 
$  Source = PNNL-15870 Rev. 1 
$  Formula = H2O 
$  Molecular weight (g/mole) = 18.01528 
$  Density (g/cm3) = 0.000756 
$  Total atom density (atoms/b-cm) = 7.583E-05 
$  Composition by weight fraction 
M355       1001  -0.111894       $  H-1
           8016  -0.888106       $  O-16
$************************************************************

$************************************************************
$  356 : Wax, M3 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 1.050000 
$  Total atom density (atoms/b-cm) = 1.134E-01 
$  Composition by weight fraction 
M356       1001  -0.114318       $  H-1
           6000  -0.655823       $  C
           8016  -0.092183       $  O-16
          12000  -0.134792       $  Mg
          20000  -0.002883       $  Ca
$************************************************************

$************************************************************
$  357 : Wax, Mix D 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.990000 
$  Total atom density (atoms/b-cm) = 1.203E-01 
$  Composition by weight fraction 
M357       1001  -0.134040       $  H-1
           6000  -0.777960       $  C
           8016  -0.035020       $  O-16
          12000  -0.038594       $  Mg
          22000  -0.014386       $  Ti
$************************************************************

$************************************************************
$  358 : Wax, Paraffin 
$  Source = PNNL-15870 Rev. 1 
$  Formula = C25H52 
$  Molecular weight (g/mole) = 352.68038 
$  Density (g/cm3) = 0.930000 
$  Total atom density (atoms/b-cm) = 1.223E-01 
$  Composition by weight fraction 
M358       1001  -0.148605       $  H-1
           6000  -0.851395       $  C
$************************************************************

$************************************************************
$  359 : Wood (Southern Pine) 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 0.640000 
$  Total atom density (atoms/b-cm) = 4.932E-02 
$  Composition by weight fraction 
M359       1001  -0.059642       $  H-1
           6000  -0.497018       $  C
           7014  -0.004970       $  N-14
           8016  -0.427435       $  O-16
          12000  -0.001988       $  Mg
          16000  -0.004970       $  S
          19000  -0.001988       $  K
          20000  -0.001988       $  Ca
$************************************************************

$************************************************************
$  360 : Xenon 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Xe 
$  Molecular weight (g/mole) = 131.293 
$  Density (g/cm3) = 0.005485 
$  Total atom density (atoms/b-cm) = 2.516E-05 
$  Composition by weight fraction 
M360      54000  -1.000000       $  Xe
$************************************************************

$************************************************************
$  361 : Yttrium Aluminum Garnet (YAG) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Y3Al5O12 
$  Molecular weight (g/mole) = 593.61804 
$  Density (g/cm3) = 4.560000 
$  Total atom density (atoms/b-cm) = 9.252E-02 
$  Composition by weight fraction 
M361       8016  -0.323428       $  O-16
          13027  -0.227263       $  Al-27
          39089  -0.449308       $  Y-89
$************************************************************

$************************************************************
$  362 : Yttrium Aluminum Perovskite (YAP) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = YAlO3 
$  Molecular weight (g/mole) = 163.885588 
$  Density (g/cm3) = 5.370000 
$  Total atom density (atoms/b-cm) = 9.866E-02 
$  Composition by weight fraction 
M362       8016  -0.292876       $  O-16
          13027  -0.164636       $  Al-27
          39089  -0.542487       $  Y-89
$************************************************************

$************************************************************
$  363 : Yttrium OxyorthoSilicate (YSO) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Y2SiO5 
$  Molecular weight (g/mole) = 285.8942 
$  Density (g/cm3) = 4.450000 
$  Total atom density (atoms/b-cm) = 7.499E-02 
$  Composition by weight fraction 
M363       8016  -0.279813       $  O-16
          14000  -0.098237       $  Si
          39089  -0.621949       $  Y-89
$************************************************************

$************************************************************
$  364 : Zeolite (Natrolite) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = NA2Al2Si3O10-2(H2O) 
$  Molecular weight (g/mole) = 380.223676 
$  Density (g/cm3) = 2.250000 
$  Total atom density (atoms/b-cm) = 8.196E-02 
$  Composition by weight fraction 
M364       1001  -0.010604       $  H-1
           8016  -0.504947       $  O-16
          11023  -0.120928       $  Na-23
          13027  -0.141925       $  Al-27
          14000  -0.221597       $  Si
$************************************************************

$************************************************************
$  365 : Zinc 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Zn 
$  Molecular weight (g/mole) = 65.409 
$  Density (g/cm3) = 7.133000 
$  Total atom density (atoms/b-cm) = 6.567E-02 
$  Composition by weight fraction 
M365      30000  -1.000000       $  Zn
$************************************************************

$************************************************************
$  366 : Zinc Selenide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = ZnSe 
$  Molecular weight (g/mole) = 144.369 
$  Density (g/cm3) = 5.420000 
$  Total atom density (atoms/b-cm) = 4.522E-02 
$  Composition by weight fraction 
M366      30000  -0.453068       $  Zn
          34000  -0.546932       $  Se
$************************************************************

$************************************************************
$  367 : Zinc Sulfide 
$  Source = PNNL-15870 Rev. 1 
$  Formula = ZnS 
$  Molecular weight (g/mole) = 97.474 
$  Density (g/cm3) = 4.090000 
$  Total atom density (atoms/b-cm) = 5.054E-02 
$  Composition by weight fraction 
M367      16000  -0.328960       $  S
          30000  -0.671040       $  Zn
$************************************************************

$************************************************************
$  368 : Zircaloy-2 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 6.560000 
$  Total atom density (atoms/b-cm) = 4.348E-02 
$  Composition by weight fraction 
M368       8016  -0.001197       $  O-16
          24000  -0.000997       $  Cr
          26000  -0.000997       $  Fe
          28000  -0.000499       $  Ni
          40000  -0.982348       $  Zr
          50000  -0.013962       $  Sn
$************************************************************

$************************************************************
$  369 : Zircaloy-4 
$  Source = PNNL-15870 Rev. 1 
$  Density (g/cm3) = 6.560000 
$  Total atom density (atoms/b-cm) = 4.350E-02 
$  Composition by weight fraction 
M369       8016  -0.001196       $  O-16
          24000  -0.000997       $  Cr
          26000  -0.001994       $  Fe
          40000  -0.981858       $  Zr
          50000  -0.013955       $  Sn
$************************************************************

$************************************************************
$  370 : Zirconium 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Zr 
$  Molecular weight (g/mole) = 91.224 
$  Density (g/cm3) = 6.506000 
$  Total atom density (atoms/b-cm) = 4.295E-02 
$  Composition by weight fraction 
M370      40000  -1.000000       $  Zr
$************************************************************

$************************************************************
$  371 : Zirconium Hydride (Zr5H8) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = Zr5H8 
$  Molecular weight (g/mole) = 464.18352 
$  Density (g/cm3) = 5.610000 
$  Total atom density (atoms/b-cm) = 9.462E-02 
$  Composition by weight fraction 
M371       1001  -0.017371       $  H-1
          40000  -0.982629       $  Zr
$************************************************************

$************************************************************
$  372 : Zirconium Hydride (ZrH2) 
$  Source = PNNL-15870 Rev. 1 
$  Formula = ZrH2 
$  Molecular weight (g/mole) = 93.23988 
$  Density (g/cm3) = 5.610000 
$  Total atom density (atoms/b-cm) = 1.087E-01 
$  Composition by weight fraction 
M372       1001  -0.021620       $  H-1
          40000  -0.978380       $  Zr
$************************************************************

$************************************************************
$  373 : Martian Atmosphere 
$  Source = Mahaffy 2013, DOI: 10.1126/science.1237966 
$  Density (g/cm3) = function of altitude and time 
$  Composition by weight fraction 
M373       6000  -0.261948       $  C
           7000  -0.018896       $  N
           8000  -0.699860       $  O
          18000  -0.019296       $  Ar
$************************************************************

$************************************************************
$  374 : Martian Regolith 
$  Source = McKenna-Lawlor 2012, DOI: 10.1016/j.icarus.2011.04.004 
$  Density (g/cm3) = 1.7 
$  Total atom density (atoms/b-cm) = 3.2746E-02    
$  Composition by weight fraction 
M374       1000  -0.004866       $  H
          11000  -0.024487       $  Na
          12000  -0.012944       $  Mg
          13000  -0.028739       $  Al
          14000  -0.140769       $  Si
          18000  -0.686946       $  Ar
          19000  -0.041645       $  K
          20000  -0.021344       $  Ca
          26000  -0.038259       $  Fe
$************************************************************
