Bethe logarithms for Ps-, H-, and heliumlike atoms

被引：96

作者：

Drake, GWF ^{[1
]}

Goldman, SP

机构：

[1] Univ Windsor, Dept Phys, Windsor, ON N9B 3P4, Canada

[2] Univ Western Ontario, Dept Phys, London, ON N6A 3K7, Canada

来源：

CANADIAN JOURNAL OF PHYSICS | 1999年 / 77卷 / 11期

关键词：

D O I：

10.1139/cjp-77-11-835

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new method is presented for the calculation of the mean excitation energy (Bethe logarithm) for helium and other two-electron systems. The method requires only a single matrix diagonalization within a correlated Hylleraas basis set extended to contain a wide range of distance scales. High-precision results are obtained for the ground states of Ps(-) and H-, and all the S- and P-states of heliumlike ions up to n = 5, including finite mass corrections. The results are used to calculate revised values for the quantum electrodynamic shifts for helium, and a comparison with experiment is presented.

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页码：835 / 845

页数：11

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