Study of(e,2e) process on potassium at 6 e V-60 eV above threshold in a second-order Born approximation

被引：0
|
作者：
王旸 [1 ]
周雅君 [1 ]
焦利光 [1 ]
机构：
[1] Center for Theoretical Atomic and Molecular Physics,Academy of Fundamental and Interdisciplinary Sciences, Harbin Institute of Technology
来源：
ChinesePhysicsB | 2012年 / 21卷 / 08期
基金：
中国国家自然科学基金;
关键词：
second-order Born approximation; (e; 2e) collisions; potassium; triple differential cross section;
D O I：
暂无
中图分类号：
O561.5 [碰撞与散射];
学科分类号：
摘要：
The standard distorted wave Born approximation(DWBA) method has been extended to second-order Born amplitude in order to describe the multiple interactions between the projectile and the atomic target.Second-order DWBA calculations have been preformed to investigate the triple differential cross sections(TDCS) of coplanar doubly symmetric(e,2e) collisions for the alkali target potassium at excess energies of 6 eV-60 eV.Compared with the previous first-order DWBA calculations,the present theoretical model improves the degree of agreement with experiments,especially for the backward scattering angle region of TDCS.This indicates that the present second-order Born term is capable of giving a reasonable correction to the DWBA model in studying coplanar symmetric(e,2e) problems in low and intermediate energy ranges.
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页码：201 / 205
页数：5
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