Abstract
We report the rst laboratory measurement of absorption oscillator strengths (f-values) for 6 VUV (vac 162 nm) transitions of the a 6 D ! y 6 P mul- tiplet (#8) in Fe II. We have also reconrmed a recent measurement of the f-value of the Fe II resonance line at vac = 160:845 nm. These measurements are made with the high sensitivity absorption experiment at the University of Wisconsin-Madison. Measurements are also made on UV (air 200 nm) lines in Fe II with accurately known f-values in order to construct a reliable curve of growth for the experiment. Diusive cooling of Fe + ions in the negative glow of the hollow cathode discharge, which serves as an absorbing sample, results in a non-Maxwellian ion velocity distribution. A satisfactory curve of growth is generated using a full Voigt prole with an articially low ion temperature in some cases.
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