Positron-impact ionization of atoms and molecules

被引：8
|
作者：
Campeanu, R. I. [1 ]
机构：
[1] York Univ, Dept Phys & Astron, Toronto, ON M3J 2R7, Canada
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2009年 / 267卷 / 02期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Distorted-wave methods; Positron collisions; Atoms and molecules ionization; SINGLE IONIZATION; ELECTRON-CAPTURE; CROSS-SECTIONS; CONTINUUM; H-2; NE; AR; HE; HYDROGEN; HELIUM;
D O I：
10.1016/j.nimb.2008.10.010
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
This paper presents the level of agreement between theory and experiment for positron-impact ionization of atoms and molecules. Distorted-wave theoretical models are able to reproduce the experimental integrated cross sections for atoms and diatomic molecules. The ECC phenomenon seen in the experimental triple differential cross sections can be obtained with a BBK-type model, but for very low impact energies the theory requires the inclusion of the coupling with the positronium formation channel. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：239 / 243
页数：5
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