Fragmentation of positronium

被引：39

作者：

Starrett, C ^{[1
]}

McAlinden, MT

Walters, HRJ

机构：

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

[2] Oxford Brookes Univ, Sch Comp & Math Sci, Oxford OX33 1HX, England

来源：

PHYSICAL REVIEW A | 2005年 / 72卷 / 01期

关键词：

D O I：

10.1103/PhysRevA.72.012508

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The impulse approximation is used to calculate cross sections for fragmentation of Ps(1s) in collision with He, Ne, Ar, Kr, and Xe. Triple, double, single, and total cross sections are evaluated. Reasonably good agreement is found with the measurements of Armitage [Phys. Rev. Lett. 89, 173402 (2002)] on Ps(1s)+He(1(1)S) scattering. These absolute measurements comprise the total Ps ionization cross section and the cross section differential with respect to the longitudinal energy of the ejected positron. Characteristics of free electron and free positron scattering are explored in the double and triple differential cross sections for Ps(1s)+Xe scattering.

引用

页数：14

共 29 条

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