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2006-06-01 - Article/Dans un journal avec peer-review - Anglais - 6 page(s)

Xu H.-L., Sun S.W., Dai Z.W., Jiang Z.K., Palmeri Patrick , Quinet Pascal , Biémont Emile , "Radiative lifetimes, branching fractions and oscillator strengths in Pd I and the solar palladium abundance" in Astronomy and Astrophysics, 452, 1, 357-362

  • Edition : EDP Sciences, Les Ulis (France)
  • Codes CREF : Physique atomique et moléculaire (DI1220), Astrophysique (DI1455), Mécanique quantique classique et relativiste (DI1211)
  • Unités de recherche UMONS : Astrophysique et spectroscopie (S804)
Texte intégral :

Abstract(s) :

(Anglais) Transition probabilities have been derived for 20 5s-5p transitions of Pd I from a combination of radiative lifetime measurements for 6 odd-parity levels with time-resolved laser-induced fluorescence spectroscopy and of branching fraction determination using a hollow cathode discharge lamp. Additional oscillator strengths for 18 transitions have been determined from measured lifetimes and theoretical branching fractions obtained from configuration interaction calculations with core-polarization effects included. These new results have allowed us to refine the palladium abundance in the solar photosphere: APd = 1.66 ± 0.04, in the usual logarithmic scale, a result in close agreement with the meteoritic value.

Identifiants :
  • DOI : 10.1051/0004-6361:20054610