CALCULATION OF DOUBLY-EXCITED STATES OF HELIUM WITH A FINITE DISCRETE SPECTRUM

被引:124
作者
LINDROTH, E
机构
[1] Department of Physics, Chalmers University of Technology, University of Gothenburg
来源
PHYSICAL REVIEW A | 1994年 / 49卷 / 06期
关键词
D O I
10.1103/PhysRevA.49.4473
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Doubly excited states in helium are calculated with many-body perturbation theory to all orders in the electron-electron interaction. A finite and numerical basis set, rotated out into the complex plane, is used. Results, for energies and widths, are presented for states with electrons in the n = 2 and n = 3 states. The possibility of an accuracy of a few parts in 10(6) is demonstrated. The method is equally applicable to the study of doubly excited states of many-electron systems and the extension to the corresponding relativistic procedure is straightforward.
引用
收藏
页码:4473 / 4480
页数:8
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