Ionization energies of beryllium in strong magnetic fields: a frozen core approximation

Kenneth Taylor

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

An effective frozen core approximation has been developed and applied to the calculation of energy levels and ionization energies of the beryllium atom in magnetic field strengths up to 2.35 x 10(5) T. Systematic improvement over the existing results for the beryllium ground and low-lying states has been accomplished by taking into account most of the correlation effects in the four-electron system. To our knowledge, this is the first calculation of the electronic properties of the beryllium atom in a strong magnetic field carried out using a configuration interaction approximation and thus allowing a treatment beyond that of Hartree-Fock. Differing roles played by strong magnetic fields in intrashell correlation within different states are observed. In addition, possible ways to gain further improvement in the energies of the states of interest are proposed and discussed briefly.
Original languageEnglish
Pages (from-to)2465-2477
Number of pages13
JournalJournal of Physics B: Atomic Molecular and Optical Physics
Volume36
Issue number12
Publication statusPublished - 28 Jun 2003

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Atomic and Molecular Physics, and Optics

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