发表机构
Goethe-Universität Frankfurt（法兰克福歌德大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文研究了20 keV光子与束缚电子的康普顿散射，发现结合能和库仑势形状显著影响电子运动学，且电子可被离子势反向反射，效应强度取决于轨道。
AI 中文摘要
我们提出了对20 keV光子被束缚电子康普顿散射的全面研究，涵盖了广泛的结合能范围（Ne 2p、Ne 2s、C 1s、O 1s和Ne 1s轨道）。特别是，我们测量了全微分截面，即对于固定电子能量，电子角分布相对于光子动量转移方向。我们的数据显示出与“准自由”电子近似预测的强烈偏差。电子逃逸所来自的结合能和库仑势的形状在其运动学中都起着重要作用。我们发现康普顿电子被离子势散射甚至反向反射。这种效应的强度取决于电子被发射的轨道。
英文摘要
We present a comprehensive study of Compton scattering of 20 keV photons by bound electrons over a wide range of binding energies (Ne 2p, Ne 2s, C 1s, O 1s, and Ne 1s orbitals). In particular, we have measured fully differential cross sections, i.e., electron angular distributions with respect to the direction of the photon momentum transfer for fixed electron energy. Our data show strong deviations from the predictions of the ''quasi-free'' electron approximation. The binding energy and the shape of the Coulomb potential from which the electron escapes both play a significant role in its kinematics. We find that Compton electrons are scattered and even back-reflected by the ionic potential. The strength of this effect depends on the orbital from which the electron is ejected.
Comments11 pages, 8 figures
Journal refPhys. Rev. A 114, 023105 (2026)
