Lifetime calculations in Yb II
E. Biémont, J.-F. Dutrieux, I. Martin and P. Quinet
J. Phys. B: At. Mol. Opt. Phys. 31, 3321-3333 (1998)
Oscillator strengths and lifetime values for Yb II levels have been calculated
within the framework of a pseudo-relativistic Hartree-Fock (HFR) approximation
combined with a least-squares fitting of the calculated eigenvalues to the
observed energy levels. A considerable amount of configuration interaction
together with core-polarization effects have been included in the
calculations. The quality of the HFR results has been assessed through a
comparison with data obtained using the completely independent relativistic
quantum defect orbital (RQDO) method. The theoretical lifetimes reported
in the present paper are now in good agreement with most of the accurate
experimental values available. The origin of the persisting discrepancies
is suggested.
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