Delayed maxima in photoionization cross sections of atomic ions.
Delayed maxima in photoionization cross sections of atomic ions.
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DOI：
10.1103/physreva.42.5348
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发表时间：
1990-11
期刊：
影响因子：
--
通讯作者：
Tong;Li;Pratt
中科院分区：
文献类型：
--
作者：
Tong;Li;Pratt
原子或离子的非氢光电离截面中的结构包括形状共振，与相应的电子-剩余离子散射过程中的增强现象密切相关，这也取决于原子或离子的有效势，以及库珀最小值，与初始和最终状态波函数重叠中的非氢位移相关。形状共振发生在量子缺陷的能量导数最大的能量附近。在这里，以 Xe 和 Fe 原子为例，我们讨论这些非氢特征如何随着电离程度的增加而变化。
Structures in nonhydrogenic photoionization cross sections for atoms or ions include shape resonances, closely associated with enhancement phenomena in the corresponding electron—residual-ion scattering process, which also depends on the atomic or ionic effective potential, and Cooper minima, associated with the nonhydrogenic shift in the overlap of initial-and final-state wave functions. Shape resonances occur near the energies at which the energy derivatives of the quantum defects are maximum. Here, taking Xe and Fe atoms as examples, we discuss how such nonhydrogenic features vary with increasing degrees of ionization.