Keywords

atomic data, ISM, atoms, abundances, ultraviolet

Abstract

New experimental branching fractions and transition probabilities are reported for 56 transitions in Fe II. The branching fractions are measured with a Fourier transform spectrometer and also with a high-resolution grating spectrometer on a n optically thin hollow cathode discharge. Highly accurate experimental radiative lifetimes from the recent literature provide the normalization required to convert our branching fractions into absolute transition probabilities. Results are compared with experimental and theoretical values in the literature. Our new transition probabilities will establish the absolute scale for relative absorption oscillator strengths of vacuum ultraviolet lines measured using a new high-sensitivity absorption experiment at the University of Wisconsin.

Original Publication Citation

S. D. Bergeson, K. L. Mullman, M. E. Wickliffe, J. E. Lawler, U. Litzen, and S. Johansson. Branching fractions and oscillator strengths for Fe II transitions from the 3d(6)((5)d)4p subconfiguration. Astrophys. J. 464 (2), 1044-1049 (1996).

Document Type

Peer-Reviewed Article

Publication Date

1996

Publisher

American Astronomical Society

Language

English

College

Physical and Mathematical Sciences

Department

Physics and Astronomy

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