The FERRUM project: improved experimental oscillator strengths in CrII

Hampus Nilsson, Gunilla Ljung, Hans Lundberg, Krister Nielsen

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Abstract

We report absolute oscillator strengths for 119 Cr II transitions in the wavelength region 2050-4850 angstrom. The transition probabilities have been derived by combining radiative lifetimes, measured with time- resolved laser induced fluorescence, and branching fractions from intensity calibrated Fouirer transform spectrometer data. New radiative lifetimes for the 3d(4)(D-5)4p F-4, D-4 and P-6 terms are reported, adding up to a total of 25 energy levels with measured lifetimes used to derive this improved set of atomic data.
Original languageEnglish
Pages (from-to)1165-1168
JournalAstronomy & Astrophysics
Volume445
Issue number3
DOIs
Publication statusPublished - 2006

Subject classification (UKÄ)

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

Keywords

  • atomic data
  • line : identification

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