Radiative lifetimes and transition probabilities in Hf I and Hf III |
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| Authors: | G Malcheva S Enzonga Yoca R Mayo M Ortiz L Engström H Lundberg H Nilsson É Biémont K Blagoev |
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| Institution: | Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee, BG - 1784 Sofia, Bulgaria;IPNAS (Bât. B15), University of Liège, Sart Tilman, B-4000 Liège, Belgium;CEPAMOQ, Faculty of Sciences, University of Douala, PO Box 8580, Douala, Cameroon;CIEMAT, Avda. Complutense, 22, 28040 Madrid, Spain;Faculty of Physics, Univ. Complutense de Madrid, E-28040 Madrid, Spain;Department of Physics, Lund University, PO Box 118, S-221 00 Lund, Sweden;Lund Observatory, Lund University, PO Box 43, S-221 00 Lund, Sweden;Astrophysics and Spectroscopy, University of Mons-Hainaut, B-7000 Mons, Belgium |
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| Abstract: | Radiative lifetimes of nine odd levels in Hf III (5d6p z3P0,1, z1D2, z3D1,2,3, z3F2,3,4) and of two odd levels in Hf I (5d6s26p z3D2,3) have been determined using Time-Resolved Laser-Induced Fluorescence. The investigated levels in Hf I were excited in a single-step process from the ground term (5d26s2 a3F), whereas in Hf III we started from either the ground term 5d2 a3F or the low-lying 5d6s a3D term. For all of the investigated levels, the lifetimes have been measured for the first time. A multiconfiguration relativistic Hartree–Fock method, including core-polarization effects, has been used to compute radiative lifetimes of 15 Hf III levels, including those measured in this work. Transition probabilities for 55 transitions in Hf III are also given. |
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| Keywords: | atomic data atomic processes methods: laboratory |
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