Initial-state, final-state and higher-order effects in electron impact ionization of helium atoms

被引：59

作者：

Reid, RHG ^{[1
]}

Bartschat, K

Raeker, A

机构：

[1] Queens Univ Belfast, Dept Appl Math & Theoret Phys, Belfast BT7 1NN, Antrim, North Ireland

[2] Univ Munster, Inst Theoret Phys 1, D-48149 Munster, Germany

[3] Drake Univ, Dept Phys & Astron, Des Moines, IA 50311 USA

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1998年 / 31卷 / 03期

关键词：

D O I：

10.1088/0953-4075/31/3/021

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An approximate method to include second-order effects in the treatment of electron impact ionization processes within a combined distorted wave Born approximation (DWBA)+R-matrix approach is presented. The sensitivity of the results for tri?le differential cross sections for electron impact ionization of helium to the description of the initial and final states, and to the inclusion of second-order effects within the R-matrix box, is analysed. It is found that changes in the representation of the initial bound state have the strongest effect on the theoretical predictions.

引用

页码：563 / 571

页数：9

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