Double ionization of helium by electrons: Role of angular correlation between the target electrons

被引：2
|
作者：
Defrance, P
Kereselidze, TM
Machavariani, ZS
机构：
[1] Catholic Univ Louvain, Dept Phys, FYAM, B-1348 Louvain, Belgium
[2] Tbilisi State Univ, Dept Phys, GE-380028 Tbilisi, Georgia
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2003年 / 205卷
关键词：
helium; ionization; electron;
D O I：
10.1016/S0168-583X(03)00564-0
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Fully differential to total cross-sections (TCSs) have been previously calculated for double ionization (DI) of helium-like ions by electron impact. The results were obtained within the framework of the shake-off model, using a wave function with radial correlation only for the bound electrons and a Coulomb double-continuum wave function for the ejected electrons. In the present work, angular correlation between bound electrons is taken into account and fourfold differential cross-section (4DCS) and TCSs are calculated for DI of helium-like ions. Influence of angular correlation on the 4DCS and on the TCSs is discussed. (C) 2003 Elsevier Science B.V. All rights reserved.
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页码：405 / 409
页数：5
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