Presented here are the photoionization cross sections and parameters of the photoelectron angular distribution for inner atomic subshells with binding energies beyond 1.5 keV in the photon energy range from 2 keV to 12 keV. The calculations are an extension of our previous paper containing the photoionization parameters for comparatively outer shells with binding energies lower than 1.5 keV (Trzhaskovskaya and Yarzhemsky, 2018). The calculations are intended for use in the experimental HAXPES spectroscopy investigations. The up-to-date HAXPES activity tends to increase the photon energy to investigate the deep core levels resulting in a necessity of theoretical consideration of photoionization parameters for inner atomic shells. Our relativistic calculations have been performed by the Dirac–Fock method. The photoionization cross sections have been found including all multipoles of the radiative field while the photoelectron angular distribution parameters have been obtained in the quadrupole approximation. The effect of the hole resulting in the atomic subshell after photoionization has been taken into account using the frozen orbital model.

这里介绍的是在2 keV至12 keV的光子能量范围内结合能超过1.5 keV的内部原子子壳的光电离截面和光电子角分布参数。该计算是我们先前论文的扩展，其中包含结合能低于1.5 keV的相对外壳的光电离参数（Trzhaskovskaya和Yarzhemsky，2018）。该计算旨在用于HAXPES光谱实验研究。最新的HAXPES活性倾向于增加光子能量以研究深核水平，从而导致需要对内部原子壳的光电离参数进行理论考虑。我们的相对论计算是通过Dirac-Fock方法执行的。已经发现了包括所有多极辐射场的光电离截面，而四极近似则获得了光电子角分布参数。使用冻结的轨道模型已经考虑了在光电离后产生原子子壳的空穴的影响。