Combined configuration-interaction and many-body-perturbation-theory calculations of energy levels and transition amplitudes in Be, Mg, Ca, and Sr

2001/11/03 by Igor Savukov, I. M. Savukov, W. R. Johnson · 2 citations
Physics and Astronomy · #Advanced Chemical Physics Studies #Atomic and Molecular Physics #Rare-earth and actinide compounds #physics.atom-ph

paper · pdf · doi:10.1103/physreva.65.042503

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

arxiv created 2001/11/03 · openalex publication_date 2002/03/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Configuration interaction (CI) calculations in atoms with two-valence electrons, carried out in the V^(N\ensuremath-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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