K-shell electron capture from negative ions

被引：0

作者：

Alston, Steven ^{[1
,2
]}

机构：

[1] Institute of Physics and Astronomy, Århus University, DK-8000 Århus C, Denmark

[2] Physics Department, Pennsylvania State University, Wilkes-Barre Campus, Lehman, PA 18627, United States

来源：

Journal of Physics B: Atomic, Molecular and Optical Physics | 1995年 / 28卷 / 23期

关键词：

Ionization - Shells (structures) - Positive ions;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Electron capture from the K-shell of a negative ion by protons is considered by accounting for the interplay between the final channel-distorted projectile and off-shell electronic scattering motions using the distorted strong-potential Born approximation. The distorted motion accounts for the ionized state of the target core and the short-range shielding of the K-shell by the passive outer-shell electrons. Total cross sections versus incident energy are compared for the negative-ion, neutral, and singly-ionized forms of the second- and third-row elements C, O, F and Si, S, Cl. Target core neutrality and diffuseness of the negative-ion screening consistently lower the cross section by amounts ranging from 22 to 37% while the positive-ion results are larger by only 1 to 15%. Previous comparison with experiment and coupled-Sturmian- pseudostate results for neutrals has shown very good agreement. © 1995 IOP Publishing Ltd.

引用

页码：5127 / 5135