Theoretical and experimental lifetime and oscillator strength determination in singly ionized neodymium (Nd II)
Author
Summary, in English
Radiative lifetime measurements were performed with time-resolved laser-induced fluorescence techniques for 24 levels of Nd II in the energy range 20 500- 32 500 cm(-1). For 17 levels, no previous experimental data exist. These results have allowed the testing of new theoretical calculations with the relativistic Hartree-Fock method taking configuration interactions and core-polarization effects into account, and a satisfying agreement has been found for this complex ion. A new set of calculated oscillator strengths, accurate within a few per cent for the strongest transitions, is presented for 107 lines of astrophysical interest appearing in the wavelength range 358.0-1100.0 nm. These results will be useful to evaluate abundance values of neodymium in chemically peculiar stars in relation with cosmochronology.
Department/s
Publishing year
2003
Language
English
Pages
433-440
Publication/Series
Monthly Notices of the Royal Astronomical Society
Volume
346
Issue
2
Full text
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Document type
Journal article
Publisher
Oxford University Press
Topic
- Atom and Molecular Physics and Optics
Keywords
- stars : chemically peculiar
- atomic data
- atomic processes
Status
Published
ISBN/ISSN/Other
- ISSN: 1365-2966