Screening corrections for calculation of electron scattering differential cross sections from polyatomic molecules

被引：117
作者：
Blanco, F
García, G
机构：
[1] Univ Complutense Madrid, Fac Ciencias Fis, Dept Fis Atom Mol & Nucl, E-28040 Madrid, Spain
[2] CSIC, Inst Matemat & Fis Fundamental, E-28006 Madrid, Spain
来源：
PHYSICS LETTERS A | 2004年 / 330卷 / 3-4期
关键词：
electron scattering; optical potential; screening corrections; additivity rule; differential cross sections;
D O I：
10.1016/j.physleta.2004.07.027
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
An ab initio approximate procedure is obtained for the screening correction of molecular differential cross sections calculated in the independent atom approximation. Proposed corrections arise from a semiclassical analysis of atomic geometrical overlapping as seen by the incident electrons. The resulting treatment is very simple and its application to CO2, CF4 and C3F8 sample molecules reveals significant improvements in the 10-200 eV incident energy region. (C) 2004 Published by Elsevier B.V.
引用
收藏
页码：230 / 237
页数：8
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