Lifetimes and oscillator strengths in the triplet system of ZnI |
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Authors: | H Kerkhoff M Schmidt P Zimmermann |
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Institution: | 1. Institut für Strahlungs- und Kernphysik der Technischen Universit?t, Berlin, Germany
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Abstract: | Selective laser excitation was used to measure the radiative lifetimes of the ZnI triplet states 4sns 3 S 1(n=5–7) and 4snd 3 D 3,3 D 2 and3 D 1(n=4–6). These states were excited from the metastable 4s4p 3 P states, which were collisionally populated in an atomic beam. The values are compared with the results of other experimental methods (beam-foil, pulsed electron excitation, Hanle effect) and with theoretical calculations. The corresponding oscillator strengths are discussed with respect to the astrophysical determination of the Zn photospheric abundance. |
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