Photoionization Cross Section of the Neutral Iron Atom
Photoionization Cross Section of the Neutral Iron Atom
复制标题
中性铁原子的光电离截面
DOI：
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发表时间：
1971
期刊：
影响因子：
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通讯作者：
A. Ron
中科院分区：
文献类型：
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作者：
H. P. Kelly;A. Ron
计算了从阈值到10 keV光子能量范围内中性铁原子的光电离截面。我们的结果是基于使用非相对论波函数和偶极子近似。通过使用多体微扰理论，相关性被包括到低阶;并且发现包括相关性的横截面与从Hartree-Fock近似获得的横截面有很大不同。Hartree-Fock的结果也进行了比较。当在几个eV上积分时，我们粗略地估计了我们的横截面，包括阈值附近的相关性，精确度在2倍以内。
Calculations are presented for the photoionization cross section of the neutral iron atom for photon energies from threshold to 10 keV. Our results are based upon the use of nonrelativistic wave functions and the dipole approximation. Correlations are included to low orders by the use of many-body perturbation theory; and the cross section including correlations is found to differ greatly from that obtained from the Hartree-Fock approximation. Hartree-Fock results are also presented for comparison. We roughly estimate our cross section, including correlations near threshold, to be accurate to within a factor of 2 when integrated over a few eV.