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

Details Lifetime measurements and absolute oscillator strengths for single ionized thorium (Th II) Lifetime measurements and absolute oscillator strengths for single ionized thorium (Th II)

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phys...38..370s&link_type=abstract

Physica Scripta (ISSN 0031-8949), vol. 38, no. 3, Sept. 1988, p. 370-373. Research supported by the Carlsberg Foundation and Sta

Astronomy and Astrophysics

Astrophysics

11

Life (Durability), Metal Ions, Oscillator Strengths, Thorium, Continuous Wave Lasers, Dye Lasers, Galactic Evolution, Stellar Evolution

Scientific paper

Using collinear fast beam cw dye laser modulation spectroscopy, accurate lifetimes in Th II have been measured. Together with known branching ratios, these lifetimes have allowed the determination of absolute oscillator strengths for Th II. 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.

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