2005/02/19 by V. A. Dzuba · 1 citation
Chemistry · Physics and Astronomy · #Advanced Chemical Physics Studies #Atomic and Molecular Physics #Mass Spectrometry Techniques and Applications #physics.atom-ph
paper · pdf · doi:10.1103/physreva.71.062501
published as Phys. Rev. A 71, 062501 (2005) · 7 pages, 3 figures, 3 tables; submitted to Phys. Rev. A
arxiv created 2005/02/19 · openalex publication_date 2005/06/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Energy levels of germanium, tin, and lead, together with their single, double, and triple ionized positive ions have been calculated using the V^N\ensuremath-M approximation suggested in previous work [Dzuba, Phys. Rev. A 71, 032512 (2005)] [M is the number of valence electrons (M=4)]. Initial Hartree-Fock calculations are done for the quadruply ionized ions with all valence electrons removed. The core-valence correlations are included beyond the second-order of the many-body perturbation theory. Interaction between valence electrons is treated by means of the configuration interaction technique. It is demonstrated that accurate treatment of the core-valence correlations leads to systematic improvement of the accuracy of calculations for all ions and neutral atoms.