Simple model for the ionization of helium atoms by fully and partially stripped ions in the strong interaction region

被引：2

作者：

Chen, Lin ^{[1
]}

Guo, Yanling ^{[1
]}

Chen, Ximeng ^{[1
]}

Ding, Baowei ^{[1
]}

机构：

[1] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China

来源：

PHYSICS LETTERS A | 2011年 / 376卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Ionization; Over-barrier model; Highly charged ions; HIGHLY-CHARGED IONS; ABSOLUTE CROSS-SECTIONS; DOUBLE-ELECTRON-CAPTURE; TARGET IONIZATION; ANGULAR-DISTRIBUTIONS; MULTIPLE IONIZATION; BARRIER MODEL; LOW ENERGIES; COLLISIONS; IMPACT;

D O I：

10.1016/j.physleta.2011.10.019

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Theoretical calculations employing the modified over-barrier model to investigate single and double ionization cross sections of helium in collisions with highly charged ions are presented in the strong perturbation region. It shows the velocity and charge state dependences of cross sections, which coincides with the available experimental data. In order to determine the reliability of this model for partially stripped projectiles, the cross-section ratios have been measured for CZp+, Ozp+ -He (Z(p) = 1-4) by the coincidence technique in the velocity range of 1-4.5 a.u. The calculated results are approximately in agreement with the experimental data. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：114 / 122

页数：9

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