Branching fractions and A values in singly ionized tantalum (Ta II)

[en] Aims. 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.

Disciplines :

Physics

Author, co-author :

Quinet, Pascal ; Université de Liège - ULiège > Département de physique > Physique nucléaire, atomique et spectroscopie

Fivet, V.

Palmeri, P.

Biémont, Emile ; Université de Liège - ULiège > Département de physique > Physique nucléaire, atomique et spectroscopie

Engström, L.

Lundberg, H.

Nilsson, H.

Language :

English

Title :

Branching fractions and A values in singly ionized tantalum (Ta II)

Publication date :

2009

Journal title :

Astronomy and Astrophysics

ISSN :

0004-6361

eISSN :

1432-0746

Publisher :

EDP Sciences, Les Ulis, France

Volume :

493

Pages :

711-719

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 19 March 2010

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