Experimental and theoretical studies of Dy iii: radiative lifetimes and oscillator strengths of astrophysical interest |
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| Authors: | Z. G. Zhang,S. Svanberg,P. Palmeri,P. Quinet,E. Bié mont |
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| Affiliation: | Department of Physics, Lund Institute of Technology, PO Box 118, S-221 00 Lund, Sweden; Astrophysique et Spectroscopie, Universitéde Mons-Hainaut, B-7000 Mons, Belgium; IPNAS (Bât. B 15), Universitéde Liège, Sart Tilman, B-4000 Liège 1, Belgium |
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| Abstract: | The lifetimes of three short-lived levels belonging to the 4f96p configuration and of two long-lived levels of the 4f95d configuration of Dy iii have been measured for the first time using time-resolved laser-induced fluorescence techniques. They are in good agreement with theoretical values calculated within the framework of a pseudo-relativistic configuration interaction approximation. Using the experimental lifetimes and the theoretical branching fractions, a first set of transition probabilities of astrophysical interest has been obtained for Dy iii . |
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| Keywords: | atomic data atomic processes techniques: spectroscopic stars: chemically peculiar |
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