Experimental and theoretical lifetimes and transition probabilities in Sb I

Details Experimental and theoretical lifetimes and transition probabilities in Sb I Experimental and theoretical lifetimes and transition probabilities in Sb I

2010-12-20

arxiv.org/abs/1012.4285v1

PRA 82, 052512 (2010); http://pra.aps.org/abstract/PRA/v82/i5/e052512

Physics

Atomic Physics

10 pages

Scientific paper

10.1103/PhysRevA.82.052512

We present experimental atomic lifetimes for 12 levels in Sb I, out of which seven are reported for the first time. The levels belong to the 5p$^2$($^3$P)6s $^{2}$P, $^{4}$P and 5p$^2$($^3$P)5d $^{4}$P, $^{4}$F and $^{2}$F terms. The lifetimes were measured using time-resolved laser-induced fluorescence. In addition, we report new calculations of transition probabilities in Sb I using a Multiconfigurational Dirac-Hartree-Fock method. The physical model being tested through comparisons between theoretical and experimental lifetimes for 5d and 6s levels. The lifetimes of the 5d $^4$F$_{3/2, 5/2, 7/2}$ levels (19.5, 7.8 and 54 ns, respectively) depend strongly on the $J$-value. This is explained by different degrees of level mixing for the different levels in the $^4$F term.

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