Radiative dipole transition-probabilities for Fe-II |
Nahar.SN |
Astronomy & Astrophysics, 1995, Vol.293, No.3, pp.967-977 |
Oscillator strengths, line strengths and Einstein A-coefficients
are obtained for a large number of dipole allowed
() fine structure transitions in Fe II.
Spectroscopic energies of the observed fine structure levels
are employed in the transformation from LS coupled multiplet
strengths to the individual fine structure lines. The
transition probabilities are thus significantly improved in
accuracy over those obtained with calculated energies. As part
of the second phase of the Iron Project the present work is
part of the effort to improve the accuracy and the utility of
the Opacity Project data. The calculations correspond to a 83-
state close coupling calculations for Fe it described by Nahar
& Pradhan (1994). Comparison of present oscillator strengths
and lifetimes is made with experimental values, and with those
calculated by Kurucz; the present values show an overall better
agreement with the experimental data. Radiative data is
obtained for 21,589 dipole allowed fine structure transitions
in Fe II.