Low-temperature antihydrogen-atom scattering

被引：5
|
作者：
Jonsell, S. [1 ]
机构：
[1] Umea Univ, Dept Phys, SE-90187 Umea, Sweden
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2006年 / 247卷 / 01期
关键词：
antihydrogen; antimatter; scattering; annihilation;
D O I：
10.1016/j.nimb.2006.01.050
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A simple method to include the strong force in atom-antiatom scattering is presented. It is based on the strong-force scattering length between the nucleon and antinucleon. Using this method elastic and annihilation cross-sections are calculated for hydrogen-antihydrogen and helium-antihydrogen scattering. The results are compared to first-order perturbation theory using a pseudo-potential. The pseudo-potential approach works fairly well for hydrogen-anti hydrogen scattering, but fails for helium-antihydrogen scattering where strong-force effects are more prominent. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：138 / 142
页数：5
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