Calculation of the energy levels of barium using B splines and a combined configuration-interaction and many-body-perturbation-theory method

被引：52

作者：

Dzuba, VA ^{[1
]}

Johnson, WR

机构：

[1] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia

[2] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

来源：

PHYSICAL REVIEW A | 1998年 / 57卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.57.2459

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A recently developed method of precise atomic calculations [Phys. Rev. A 54, 3948 (1996)] which combines many-body perturbation theory with the configuration-interaction method is used to calculate the 24 lowest energy levels of Pa. B-spline functions in a cavity of a finite radius are used as a unified many-purpose basis set. The calculation reproduces the experimental removal energies for Pa within a fraction of a per cent. Advantages of the new method and B splines are discussed.

引用

页码：2459 / 2465

页数：7

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