Transition probabilities and lifetimes for atoms and ions from the sixth row of the periodic table and the database DESIRE

V. Fivet, P. Quinet, P. Palmeri, E. Biemont, Huailiang Xu

Research output: Contribution to journalArticlepeer-review

Abstract

We have started a systematic investigation of the radiative properties of the elements of the sixth row of the periodic table. Using a combination of experimental radiative lifetimes obtained with the time-resolved laser-induced fluorescence (LIF) technique and of theoretical branching fractions (BF) calculated with a HFR approach taking configuration interaction and core-polarization effects into account, transition probabilities have been deduced for a number of transitions of astrophysical interest. So far results have been obtained for the elements Ta, Re, Os, Ir, Tl or An or their ions. The results obtained are stored in the database DatabasE for the SIxth Row Elements (DESIRE), an extension of the database DREAM, which will be progressively created on a web site of the University of Mons-Hainaut in Belgium. In the present paper, some emphasis is put on the procedures followed to obtain the new results but also on the difficulties associated with their determination. (c) 2006 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)250-254
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume156
DOIs
Publication statusPublished - 2007

Subject classification (UKÄ)

  • Atom and Molecular Physics and Optics

Free keywords

  • f values
  • electronic structure
  • lifetimes
  • database

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