Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26a...382..368n&link_type=abstract
Astronomy and Astrophysics, v.382, p.368-377 (2002)
Astronomy and Astrophysics
Astrophysics
37
Atomic Data, Stars: Evolution, Galaxy: Evolution
Scientific paper
We have measured radiative lifetimes of ten Th II levels by using the laser-induced fluorescence technique and branching fractions with Fourier transform spectroscopy. By combining the new branching fractions with a total of 23 lifetimes, from the present work and from measurements by Simonsen et al. (\cite{Simonsen}), absolute oscillator strengths for 180 lines have been derived. Some of these new f-values reported are relevant for radioactive dating of stars.
Johansson Sara
Lundberg Hans
Nilsson Hampus
Nordstrom Birgita
Zhang Z. G.
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