The long-range interaction in the scattering of positronium by hydrogen atoms

被引：1
|
作者：
Meredith, D. G. [1 ]
Fraser, P. A. [2 ]
机构：
[1] Western Univ, Kings Univ Coll, Dept Econ Business & Math, London, ON N6A 2M3, Canada
[2] Western Univ, Dept Appl Math, London, ON N6A 5B7, Canada
来源：
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2018年 / 51卷 / 05期
基金：
加拿大自然科学与工程研究理事会;
关键词：
positronium; elastic scattering; pseudo-states; van der Waals interaction; dipole-dipole; CLOSE-COUPLING APPROXIMATION; ENERGY ORTHO-POSITRONIUM;
D O I：
10.1088/1361-6455/aaa649
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Elastic scattering of positronium by hydrogen atoms is investigated. A method is devised wherein the effects of the long-range van der Waals attraction between the two atoms are accurately incorporated into a trial wave function in the form of a pseudo-state. The properly adjusted trial function yields a van der Waals coefficient that is within 0.03% of the known value. Improved phase shifts in the absence of exchange are reported.
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页数：6
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