The effect of dynamical screening on helium (e, 3e) differential cross-sections

被引：19
|
作者：
Götz, JR
Walter, M
Briggs, JS
机构：
[1] Univ Freiburg, Inst Phys, D-79104 Freiburg, Germany
[2] Univ Jyvaskyla, FIN-40014 Jyvaskyla, Finland
来源：
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2005年 / 38卷 / 10期
关键词：
D O I：
10.1088/0953-4075/38/10/014
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A simplified derivation of dynamic screening in the case of three Coulomb-interacting particles in the continuum is given and applied to describe the shapes of multi-differential cross-sections for the (e, 3e) process on the helium atom in which the incident fast electron is treated in first-order Born approximation. A very good agreement with experimental multi-differential cross-sections is obtained for two slow ejected electrons (specifically both electrons have 5 eV) but the strategy appears to be breaking down at intermediate emission energies.
引用
收藏
页码：1569 / 1579
页数：11
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