Combined CI+MBPT calculations of energy levels and transition amplitudes in Be, Mg, Ca, and Sr

Details Combined CI+MBPT calculations of energy levels and transition amplitudes in Be, Mg, Ca, and Sr Combined CI+MBPT calculations of energy levels and transition amplitudes in Be, Mg, Ca, and Sr

2001-11-03

arxiv.org/abs/physics/0111008v1

Phys. Rev. A 65, 042503, 1-7 (2002)

Physics

Atomic Physics

Scientific paper

10.1103/PhysRevA.65.042503

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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