2ND-ORDER THEORIES FOR ELECTRON LOSS IN FAST COLLISIONS WITH HE ATOMS

被引：12
|
作者：
JAKUBASSAAMUNDSEN, DH
机构：
[1] Sektion Physik, Universität München, Garching, W-8046
来源：
ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS | 1992年 / 22卷 / 04期
关键词：
D O I：
10.1007/BF01437252
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The momentum distribution of projectile electrons ejected in collisions with light targets is calculated within the second-order Born approximation for direct ionisation and within the electron impact approximation and the impulse approximation for electron capture to the target continuum. From comparison with available experimental data it is found that for forward emission angles the electron is well described by a projectile eigen-state, while at backward angles a target final state is more appropriate. At all angles the inclusion of simultaneous target excitation is very important.
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页码：701 / 711
页数：11
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