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Combined configuration-interaction and many-body-perturbation-theory calculations of energy levels and transition amplitudes in Be, Mg, Ca, and Sr
被引:59
作者:
Savukov, IM
[1
]
Johnson, WR
[1
]
机构:
[1] Univ Notre Dame, Dept Phys, Notre Dame, IN 46566 USA
来源:
PHYSICAL REVIEW A
|
2002年
/
65卷
/
04期
关键词:
D O I:
10.1103/PhysRevA.65.042503
中图分类号:
O43 [光学];
学科分类号:
070207 ;
0803 ;
摘要:
Configuration interaction (CI) calculations in atoms with two-valence electrons, carried out in the V(N-2) Hartree-Fock potential of the core, are corrected for core-valence interactions using many-body perturbation theory (MBPT). Two variants of the mixed CI+MBPT theory are described and applied to obtain energy levels and transition amplitudes for Be, Mg, Ca, and Sr.
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