Branching Fractions and Oscillator Strengths for Fe II Transitions from the 3d 6 ( 5 D)4p Subconfiguration
1996
New experimental branching fractions and transition probabilities are reported for 56 transitions in FeII. The branching fractions are measured with a Fourier transform spectrometer and also with a high-resolution grating spectrometer on an 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. {copyright} {ital 1996 The American Astronomical Society.}
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