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Radiative parameters of Nb i excited states

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Author

Summary, in English

Radiative lifetimes of 17 excited levels of Nb i, in the energy range 27 400-47 700 cm-1 (5p y 6D degrees(9/2), 5p x 6D degrees(7/2), 5p w 4G degrees(7/2,9/2,11/2), 5s5p v 4D degrees(1/2,3/2,5/2,7/2), 5s6p n 4D degrees(1/2,3/2,5/2,7/2), 5s6p o 4F degrees(3/2,5/2,7/2,9/2)), have been measured. For 15 of these levels, the lifetimes are obtained for the first time. The lifetimes were measured using the time-resolved laser-induced fluorescence technique and the experiments are complemented by a theoretical investigation using a relativistic Hartree-Fock method including core polarization. By combining the experimental lifetimes and the calculated branching fractions, we obtain transition probabilities for the individual de-excitation channels from the investigated levels.

Publishing year

2011

Language

English

Pages

1823-1827

Publication/Series

Monthly Notices of the Royal Astronomical Society

Volume

412

Issue

3

Document type

Journal article

Publisher

Oxford University Press

Topic

  • Atom and Molecular Physics and Optics
  • Astronomy, Astrophysics and Cosmology

Keywords

  • atomic data
  • atomic processes
  • methods: laboratory

Status

Published

ISBN/ISSN/Other

  • ISSN: 1365-2966