Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978ap%26ss..58..365m&link_type=abstract
Astrophysics and Space Science, vol. 58, no. 2, Oct. 1978, p. 365-369.
Astronomy and Astrophysics
Astrophysics
5
Abundance, Astrophysics, Metal Ions, Strontium, Transition Probabilities, Zirconium, Hartree Approximation, Wave Functions
Scientific paper
Transition probabilities are calculated for 13 allowed transitions of astrophysical interest in Zr II, Zr III, and Sr I. In determining the f-values, the Hartree-Fock wave functions are computed by the methods developed by Mayers and O'Brien (1969) as well as by Froese-Fisher (1977). The wave functions are used to determine the dipole velocity and dipole length, which are compared to evaluate the significance of the differences. It is found that: (1) there are sizable differences between the respective f-values based on dipole length and dipole velocity for Sr I and Zr III; (2) the f-values based on dipole velocity for Sr I agree reasonably well with the experimentally determined f-value; and (3) the two f-values for Zr II differ anywhere from approximately 2% to 20%. Possible reasons for the differences are considered.
Czyzak Stanley J.
Malloy P. J.
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