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2009-01-02 - Article/Dans un journal avec peer-review - Anglais - 9 page(s)

Quinet Pascal , Fivet Vanessa, Palmeri Patrick , Biémont Emile , Engström L., Lundberg H., Nilsson H., "Branching fractions and A values in singly ionized tantalum (Ta II)" in Astronomy and Astrophysics, 493, 2, 711-719

  • Edition : EDP Sciences, Les Ulis (France)
  • Codes CREF : Physique atomique et moléculaire (DI1220), Mécanique quantique classique et relativiste (DI1211)
  • Unités de recherche UMONS : Astrophysique et spectroscopie (S804)
Texte intégral :

Abstract(s) :

(Anglais) We report on the theoretical and experimental lifetimes of Ta II, and calculated branching fractions for selected transitions. Methods. The theoretical data are obtained by means of a relativistic Hartree-Fock method with detailed attention to correlation effects. The experimental lifetimes are measured with the time-resolved, laser-induced, fluorescence technique. Results. The calculated results are in good agreement with both previously known and new experimental lifetimes. New transition probabilities have been deduced for a set of Ta II transitions of astrophysical interest.

Identifiants :
  • DOI : 10.1051/0004-6361:200811035