Lifetime measurements and absolute oscillator strengths for single ionized thorium (ThII)

H. Simonsen, T. Worm, P. Jessen, O. Poulsen

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Using collinear fast beam cw dye laser modulation spectroscopy accurate lifetimes in ThII have been measured. Together with known branching ratios these lifetimes have allowed the determination of absolute oscillator strengths for ThII. This element is of astrophysical interest as a chronometer for stellar and galaxy evolution, with oscillator strengths playing an important role in synthesis of stellar spectral data.

Original languageEnglish (US)
Pages (from-to)370-373
Number of pages4
JournalPhysica Scripta
Volume38
Issue number3
DOIs
StatePublished - Sep 1 1988
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics

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