Branching fractions in singly ionized tungsten

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Abstract

The intensity-calibrated spectra of W II have been recorded in the spectral interval 23 000-51 300 cm(-1) (1950-4350 angstrom), using the FT500 UV Fourier Transform Spectrometer at Lund Observatory. Combining the intensity data in this work with lifetimes previously measured using the time-resolved laser-induced-fluorescence (TR-LIF) technique resulted in transition probabilities and log gf values for 95 transitions in W II, originating from nine different upper levels with energies between 47 179 and 55 392 cm(-1). Of these transitions, 85 have never been measured before. The new data are compared with theoretical calculations and with previously measured values when available.

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Subject classification (UKÄ) – MANDATORY

  • Astronomy, Astrophysics and Cosmology
  • Atom and Molecular Physics and Optics
Original languageEnglish
Article number245001
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume44
Issue number24
Publication statusPublished - 2011
Publication categoryResearch
Peer-reviewedYes

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