    energy(eV)      sigma_a(b)
    1.000000e-05    9.550162e-03
    1.103037e-05    9.093178e-03
    1.216691e-05    8.658061e-03
    1.342055e-05    8.243765e-03
    1.480336e-05    7.849294e-03
    1.632865e-05    7.473698e-03
    1.801111e-05    7.116075e-03
    1.986691e-05    6.775565e-03
    2.191394e-05    6.451348e-03
    2.417189e-05    6.142645e-03
    2.666248e-05    5.848714e-03
    2.940971e-05    5.568848e-03
    3.243999e-05    5.302374e-03
    3.578251e-05    5.048651e-03
    3.946943e-05    4.807068e-03
    4.353624e-05    4.577046e-03
    4.802208e-05    4.358030e-03
    5.297013e-05    4.149495e-03
    5.842801e-05    3.950938e-03
    6.444825e-05    3.761882e-03
    7.108881e-05    3.581872e-03
    7.841358e-05    3.410477e-03
    8.649308e-05    3.247282e-03
    9.540506e-05    3.091897e-03
    1.052353e-04    2.943947e-03
    1.160784e-04    2.803077e-03
    1.280388e-04    2.668947e-03
    1.412315e-04    2.541235e-03
    1.557836e-04    2.419635e-03
    1.718351e-04    2.303853e-03
    1.895404e-04    2.193612e-03
    2.090701e-04    2.088646e-03
    2.306120e-04    1.988702e-03
    2.543736e-04    1.893541e-03
    2.805835e-04    1.802933e-03
    3.094939e-04    1.716661e-03
    3.413832e-04    1.634518e-03
    3.765583e-04    1.556305e-03
    4.153577e-04    1.481834e-03
    4.581549e-04    1.410927e-03
    5.053618e-04    1.343413e-03
    5.574328e-04    1.279129e-03
    6.148689e-04    1.217922e-03
    6.782232e-04    1.159643e-03
    7.481052e-04    1.104153e-03
    8.251877e-04    1.051319e-03
    9.102125e-04    1.001012e-03
    1.003998e-03    9.531130e-04
    1.107447e-03    9.075060e-04
    1.221555e-03    8.640810e-04
    1.347420e-03    8.227340e-04
    1.486254e-03    7.833650e-04
    1.639393e-03    7.458800e-04
    1.808311e-03    7.101890e-04
    1.994634e-03    6.762060e-04
    2.200155e-03    6.438490e-04
    2.426853e-03    6.130400e-04
    2.676908e-03    5.837060e-04
    2.952729e-03    5.557750e-04
    3.256969e-03    5.291810e-04
    3.592557e-03    5.038590e-04
    3.962723e-03    4.797490e-04
    4.371030e-03    4.567920e-04
    4.821407e-03    4.349350e-04
    5.318191e-03    4.141230e-04
    5.866161e-03    3.943060e-04
    6.470592e-03    3.754390e-04
    7.137302e-03    3.574730e-04
    7.872708e-03    3.403680e-04
    8.683888e-03    3.240810e-04
    9.578649e-03    3.085740e-04
    1.056560e-02    2.938080e-04
    1.165425e-02    2.797490e-04
    1.285507e-02    2.663630e-04
    1.417962e-02    2.536170e-04
    1.564064e-02    2.414810e-04
    1.725221e-02    2.299260e-04
    1.902982e-02    2.189240e-04
    2.099059e-02    2.084480e-04
    2.315340e-02    1.984740e-04
    2.524188e-02    1.900860e-04
    2.530000e-02    1.898670e-04
    2.790683e-02    1.807820e-04
    3.078227e-02    1.721320e-04
    3.395398e-02    1.638960e-04
    3.745250e-02    1.560540e-04
    4.131149e-02    1.485890e-04
    4.556810e-02    1.414820e-04
    5.026329e-02    1.347180e-04
    5.544227e-02    1.282790e-04
    6.115487e-02    1.221510e-04
    6.745608e-02    1.163160e-04
    7.440655e-02    1.107590e-04
    8.207318e-02    1.054660e-04
    9.052975e-02    1.004250e-04
    9.985766e-02    9.562740e-05
    1.101467e-01    9.106280e-05
    1.214959e-01    8.671910e-05
    1.340144e-01    8.258400e-05
    1.478229e-01    7.864540e-05
    1.630541e-01    7.489270e-05
    1.798547e-01    7.131880e-05
    1.983864e-01    6.791740e-05
    2.188275e-01    6.468010e-05
    2.413748e-01    6.159710e-05
    2.662453e-01    5.866130e-05
    2.936784e-01    5.586520e-05
    3.239382e-01    5.319860e-05
    3.573158e-01    5.065840e-05
    3.941325e-01    4.824240e-05
    4.347427e-01    4.594380e-05
    4.795372e-01    4.375410e-05
    5.289473e-01    4.166760e-05
    5.834484e-01    3.968390e-05
    6.435652e-01    3.778900e-05
    7.098762e-01    3.598360e-05
    7.830196e-01    3.427040e-05
    8.636996e-01    3.263490e-05
    9.526926e-01    3.107880e-05
    1.050855e+00    2.961060e-05
    1.167309e+00    2.812690e-05
    1.287585e+00    2.680380e-05
    1.420253e+00    2.554780e-05
    1.577565e+00    2.426520e-05
    1.740113e+00    2.312110e-05
    1.932949e+00    2.196150e-05
    2.132114e+00    2.093030e-05
    2.351800e+00    1.995260e-05
    2.594122e+00    1.901020e-05
    2.881456e+00    1.806140e-05
    3.200773e+00    1.715410e-05
    3.505840e+00    1.640150e-05
    3.894350e+00    1.558070e-05
    4.325702e+00    1.479750e-05
    4.771409e+00    1.410330e-05
    5.189821e+00    1.354370e-05
    5.684745e+00    1.297800e-05
    6.270483e+00    1.238780e-05
    6.868126e+00    1.186830e-05
    7.575797e+00    1.133180e-05
    8.415331e+00    1.078030e-05
    9.282421e+00    1.029450e-05
    1.002569e+01    9.926650e-06
    1.113671e+01    9.474970e-06
    1.245752e+01    9.013470e-06
    1.374110e+01    8.630210e-06
    1.515694e+01    8.261800e-06
    1.671867e+01    7.908920e-06
    1.870148e+01    7.522780e-06
    2.034144e+01    7.250380e-06
    2.243736e+01    6.963720e-06
    2.492260e+01    6.666590e-06
    2.827171e+01    6.327890e-06
    3.184778e+01    6.026290e-06
    3.537535e+01    5.808240e-06
    3.902032e+01    5.608820e-06
    4.364808e+01    5.390640e-06
    4.951352e+01    5.152860e-06
    5.736137e+01    4.919020e-06
    6.506961e+01    4.727850e-06
    7.127143e+01    4.596050e-06
    8.314625e+01    4.432570e-06
    9.632487e+01    4.280360e-06
    1.025905e+02    4.222320e-06
    1.196835e+02    4.101110e-06
    1.406094e+02    3.975960e-06
    1.940677e+02    3.874170e-06
    2.125643e+02    3.857570e-06
    3.154473e+02    3.817160e-06
    4.012669e+02    3.911410e-06
    5.020905e+02    4.084180e-06
    6.929802e+02    4.250370e-06
    7.227260e+02    4.282820e-06
    8.793339e+02    4.492490e-06
    1.230770e+03    4.916510e-06
    1.434162e+03    5.143990e-06
    1.720656e+03    5.533630e-06
    2.014108e+03    5.894920e-06
    2.382837e+03    6.257320e-06
    2.858842e+03    6.676640e-06
    3.184587e+03    6.945350e-06
    3.775497e+03    7.546430e-06
    4.517074e+03    8.240020e-06
    5.052794e+03    8.699110e-06
    6.086174e+03    9.401470e-06
    7.200388e+03    1.010370e-05
    8.400075e+03    1.092840e-05
    9.986107e+03    1.194320e-05
    1.202906e+04    1.295180e-05
    1.439972e+04    1.404600e-05
    1.719613e+04    1.540980e-05
    2.014108e+04    1.674960e-05
    2.437446e+04    1.838570e-05
    2.895504e+04    2.000360e-05
    3.459116e+04    2.183770e-05
    4.136652e+04    2.385640e-05
    4.918703e+04    2.599360e-05
    5.908047e+04    2.846660e-05
    7.084003e+04    3.116770e-05
    8.333651e+04    3.380840e-05
    1.002725e+05    3.711970e-05
    1.230191e+05    4.117890e-05
    1.594047e+05    4.724870e-05
    2.154283e+05    5.632330e-05
    2.370505e+05    6.014530e-05
    2.550405e+05    6.376420e-05
    2.694313e+05    6.710280e-05
    2.804041e+05    6.999200e-05
    2.911200e+05    7.327680e-05
    3.011300e+05    7.685020e-05
    3.096867e+05    8.037330e-05
    3.175642e+05    8.418180e-05
    3.240000e+05    8.780850e-05
    3.304242e+05    9.201670e-05
    3.361442e+05    9.637260e-05
    3.411500e+05    1.007640e-04
    3.459630e+05    1.056500e-04
    3.504343e+05    1.108310e-04
    3.547243e+05    1.165590e-04
    3.583000e+05    1.219830e-04
    3.618643e+05    1.281440e-04
    3.654400e+05    1.351380e-04
    3.683000e+05    1.414630e-04
    3.711600e+05    1.485360e-04
    3.740200e+05    1.564890e-04
    3.768800e+05    1.654820e-04
    3.797300e+05    1.755620e-04
    3.818743e+05    1.841230e-04
    3.840200e+05    1.935330e-04
    3.861643e+05    2.039340e-04
    3.883100e+05    2.154030e-04
    3.904543e+05    2.282910e-04
    3.926000e+05    2.425690e-04
    3.940300e+05    2.529590e-04
    3.961644e+05    2.701220e-04
    3.975944e+05    2.827030e-04
    3.997400e+05    3.033130e-04
    4.011700e+05    3.184910e-04
    4.033144e+05    3.435430e-04
    4.047444e+05    3.618050e-04
    4.061744e+05    3.814690e-04
    4.076044e+05    4.026350e-04
    4.097500e+05    4.372520e-04
    4.118944e+05    4.754290e-04
    4.140300e+05    5.170700e-04
    4.161744e+05    5.618210e-04
    4.226100e+05    7.049740e-04
    4.240400e+05    7.350410e-04
    4.254700e+05    7.627040e-04
    4.269000e+05    7.870670e-04
    4.283300e+05    8.072320e-04
    4.297600e+05    8.223970e-04
    4.311800e+05    8.318640e-04
    4.326100e+05    8.352350e-04
    4.340400e+05    8.324080e-04
    4.354700e+05    8.234840e-04
    4.369000e+05    8.088640e-04
    4.383300e+05    7.893430e-04
    4.397600e+05    7.656240e-04
    4.411900e+05    7.386960e-04
    4.440500e+05    6.786580e-04
    4.490444e+05    5.695410e-04
    4.511900e+05    5.257440e-04
    4.533344e+05    4.848760e-04
    4.554800e+05    4.473570e-04
    4.576244e+05    4.134190e-04
    4.597700e+05    3.826640e-04
    4.619144e+05    3.552040e-04
    4.633444e+05    3.384320e-04
    4.654800e+05    3.155340e-04
    4.676245e+05    2.951620e-04
    4.697700e+05    2.768350e-04
    4.719145e+05    2.604840e-04
    4.740600e+05    2.458350e-04
    4.762045e+05    2.326980e-04
    4.783500e+05    2.208360e-04
    4.804945e+05    2.102090e-04
    4.833495e+05    1.975470e-04
    4.854900e+05    1.890700e-04
    4.883500e+05    1.791000e-04
    4.904945e+05    1.723360e-04
    4.933545e+05    1.642650e-04
    4.962145e+05    1.570930e-04
    4.983600e+05    1.522240e-04
    5.000000e+05    1.492400e-04
    1.000000e+06    1.000020e-04
    1.021262e+06    1.000000e-04
    1.118599e+06    1.000000e-04
    1.126490e+06    1.000000e-04
    1.158499e+06    1.000000e-04
    1.208227e+06    1.000000e-04
    1.268916e+06    1.000000e-04
    1.277867e+06    1.000000e-04
    1.323384e+06    1.000000e-04
    1.332719e+06    1.000000e-04
    1.399662e+06    1.000000e-04
    1.409535e+06    1.000000e-04
    1.576704e+06    1.000000e-04
    1.587749e+06    1.000000e-04
    1.598949e+06    1.000000e-04
    1.739163e+06    1.000000e-04
    1.878422e+06    1.000000e-04
    1.891673e+06    1.000000e-04
    1.986691e+06    1.000000e-04
    2.000706e+06    1.000000e-04
    2.761353e+06    1.000000e-04
    3.289766e+06    1.000000e-04
    3.312972e+06    1.000000e-04
    3.479383e+06    1.000000e-04
    3.503927e+06    1.000000e-04
    3.679928e+06    1.000000e-04
    3.705887e+06    1.000000e-04
    4.540501e+06    1.000000e-04
    4.572530e+06    1.000000e-04
    5.008341e+06    1.000000e-04
    5.043670e+06    1.000000e-04
    5.078999e+06    1.000000e-04
    5.114827e+06    1.000000e-04
    5.260167e+06    1.000000e-04
    5.967030e+06    1.000000e-04
    6.136585e+06    1.000000e-04
    6.266753e+06    1.000000e-04
    6.310959e+06    1.000000e-04
    6.490288e+06    1.000000e-04
    6.961221e+06    1.000000e-04
    7.108881e+06    1.000000e-04
    7.159027e+06    1.000000e-04
    7.362454e+06    1.000000e-04
    9.147839e+06    1.000000e-04
    9.212369e+06    1.000000e-04
    9.407779e+06    1.000000e-04
    9.474142e+06    1.000000e-04
    1.002022e+07    1.000000e-04
    1.009040e+07    1.000000e-04
    1.023276e+07    1.000000e-04
    1.037713e+07    1.000000e-04
    1.052353e+07    1.000000e-04
    1.067200e+07    1.000000e-04
    1.082256e+07    1.000000e-04
    1.097525e+07    1.000000e-04
    1.113009e+07    1.000000e-04
    1.128711e+07    1.000000e-04
    1.144636e+07    1.000000e-04
    1.160784e+07    1.000000e-04
    1.177161e+07    1.000000e-04
    1.193768e+07    1.000000e-04
    1.210610e+07    1.000000e-04
    1.227690e+07    1.000000e-04
    1.245010e+07    1.000000e-04
    1.262575e+07    1.000000e-04
    1.280388e+07    1.000000e-04
    1.298452e+07    1.000000e-04
    1.316771e+07    1.000000e-04
    1.335348e+07    1.000000e-04
    1.354187e+07    1.000000e-04
    1.373293e+07    1.000000e-04
    1.392667e+07    1.000000e-04
    1.412315e+07    1.000000e-04
    1.432240e+07    1.000000e-04
    1.452447e+07    1.000000e-04
    1.472938e+07    1.000000e-04
    1.493719e+07    1.000000e-04
    1.514792e+07    1.000000e-04
    1.536163e+07    1.000000e-04
    1.557836e+07    1.000000e-04
    1.579814e+07    1.000000e-04
    1.602102e+07    1.000000e-04
    1.624705e+07    1.000000e-04
    1.647627e+07    1.000000e-04
    1.670872e+07    1.000000e-04
    1.694445e+07    1.000000e-04
    1.718351e+07    1.000000e-04
    1.742593e+07    1.000000e-04
    1.767178e+07    1.000000e-04
    1.792110e+07    1.000000e-04
    1.817393e+07    1.000000e-04
    1.843034e+07    1.000000e-04
    1.869035e+07    1.000000e-04
    1.895404e+07    1.000000e-04
    1.922145e+07    1.000000e-04
    1.949263e+07    1.000000e-04
    1.976763e+07    1.000000e-04
    2.000000e+07    1.000000e-04
    2.000000e+07    0.000000e+00
    2.028216e+07    0.000000e+00
    2.056831e+07    0.000000e+00
    2.085849e+07    0.000000e+00
    2.115277e+07    0.000000e+00
    2.145119e+07    0.000000e+00
    2.175383e+07    0.000000e+00
    2.206074e+07    0.000000e+00
    2.237198e+07    0.000000e+00
    2.268760e+07    0.000000e+00
    2.300769e+07    0.000000e+00
    2.333228e+07    0.000000e+00
    2.366146e+07    0.000000e+00
    2.399528e+07    0.000000e+00
    2.433381e+07    0.000000e+00
    2.467712e+07    0.000000e+00
    2.502527e+07    0.000000e+00
    2.537833e+07    0.000000e+00
    2.573637e+07    0.000000e+00
    2.609946e+07    0.000000e+00
    2.646768e+07    0.000000e+00
    2.684109e+07    0.000000e+00
    2.721977e+07    0.000000e+00
    2.760379e+07    0.000000e+00
    2.799323e+07    0.000000e+00
    2.838817e+07    0.000000e+00
    2.878867e+07    0.000000e+00
    2.919483e+07    0.000000e+00
    2.960672e+07    0.000000e+00
    3.002441e+07    0.000000e+00
    3.044800e+07    0.000000e+00
    3.087757e+07    0.000000e+00
    3.131320e+07    0.000000e+00
    3.175497e+07    0.000000e+00
    3.220298e+07    0.000000e+00
    3.265730e+07    0.000000e+00
    3.311804e+07    0.000000e+00
    3.358527e+07    0.000000e+00
    3.405910e+07    0.000000e+00
    3.453961e+07    0.000000e+00
    3.502691e+07    0.000000e+00
    3.552107e+07    0.000000e+00
    3.602221e+07    0.000000e+00
    3.653042e+07    0.000000e+00
    3.704580e+07    0.000000e+00
    3.756845e+07    0.000000e+00
    3.809847e+07    0.000000e+00
    3.863597e+07    0.000000e+00
    3.918106e+07    0.000000e+00
    3.973383e+07    0.000000e+00
    4.029440e+07    0.000000e+00
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