VARIATIONAL CALCULATION FOR THE GROUND-STATE OF LITHIUM AND QED CORRECTIONS FOR LI-LIKE IONS

被引：101

作者：

MCKENZIE, DK

DRAKE, GWF

机构：

[1] Department of Physics, University of Windsor, Windsor

来源：

PHYSICAL REVIEW A | 1991年 / 44卷 / 11期

关键词：

D O I：

10.1103/PhysRevA.44.R6973

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

High-precision variational calculations using multiple basis sets in Hylleraas coordinates are presented for the 1s22s 2S state of lithium. The variational bound of -7.478 060 326(10) a.u. for the nonrelativistic energy is in good agreement with our revised experimental value of -7.478 060 34(20) a.u., thereby resolving a long-standing discrepancy. Two-electron calculations of the QED corrections are extended to three-electron systems and compared with other results. The comparison for Li-like ions up to U89+ suggests a simple interpretation for the "screening of the Lamb shift" recently calculated by Cheng, Johnson, and Sapirstein [Phys. Rev. Lett. 66, 2960 (1991)].

引用

页码：R6973 / R6976

页数：4

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