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Multiconfiguration Dirac-Fock calculation of \(\) transition energies in highly ionized bismuth, thorium, and uranium

  • J.P. Santos
  • J.P. Marques
  • F. Parente
  • E. Lindroth
  • S. Boucard
  • P. Indelicato

Abstract:

Structure and QED effects for \(\) and \(\) levels are calculated for lithiumlike U89+ trough neonlike U82+, lithiumlike Th87+ trough neonlike Th80+ and lithiumlike Bi80+ trough neonlike Bi73+. The results of the first two sets are compared with recent measurements of the \(\)transition energy in 3 to 10-electron ions. Good agreement with experiment is found for most of the observed lines. Forty-one possible transitions are calculated for each ion in the eight ionization states, in the experimental energy range. Twenty-eight of these transitions have not been observed, nor calculated previously. We also calculate transition rates, branching ratios, excitation and ionization cross sections and confirm that the thirteen experimental o bserved transitions correspond to the ones with highest relative intensities. However, we find nineteen more transitions that could be measured in a more sensitive experiment.

PACS. 32.70.Cs Oscillator strengths, lifetime, transition moments - 32.70.Fw Absolute and relative intensities - 31.25.-v Electron correlation calculations for atoms and molecules 

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Copyright information

© EDP Sciences, Springer-Verlag 1998

Authors and Affiliations

  • J.P. Santos
    • 1
  • J.P. Marques
    • 2
  • F. Parente
    • 2
  • E. Lindroth
    • 3
  • S. Boucard
    • 4
  • P. Indelicato
    • 4
  1. 1.Departamento de Física da Universidade Nova de Lisboa, Centro de Física Atómica da Universidade de Lisboa, Av. Prof. Gama Pinto 2, 1699 Lisboa Codex, PortugalPT
  2. 2.Departamento de Física da Universidade de Lisboa, Centro de Física Atómica da Universidade de Lisboa, Av. Prof. Gama Pinto 2, 1699 Lisboa Codex, PortugalPT
  3. 3.Department of Atomic Physics, Stockholm University, 104 05 Stockholm, SwedenSE
  4. 4.Laboratoire Kastler-Brossel Ecole Normale Supérieure et Université Pierre et Marie Curie (Unité Associée au CNRS No. 18), Boîte 74, 4 place Jussieu, 75252 Paris Cedex 05, FranceFR

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