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

Abstract

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.

References in corpus (1)

• High-precision calculations of electric-dipole amplitudes for transitions between low-lying levels of Mg, Ca, and Sr

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