Relative oscillator strengths for 33 neutral yttrium (Y I) transitions between 2723 and 4761 Å have been measured by the hook method. The data have been analyzed and placed on an absolute scale by using a numerical procedure developed by Cardon, Smith, and Whaling and the published absolute lifetimes of Beer, and Andersen, Ramanujam, and Bahr. The <i>z</i><sup>2</sup><i>F</i>°<sub>5/2</sub> level lifetime of Beer is found to be in error. The absolute lifetime of the level <i>y</i><sup>2</sup><i>P</i>°<sub>3/2</sub> is determined to be 36 ± 4 ns. The total uncertainties in the absolute oscillator strengths are between 9% and 14%.
© 1980 Optical Society of America
Bartley L. Cardon, W. H. Parkinson, and F. S. Tomkins, "Oscillator strengths of neutral yttrium (Y I) from hook-method measurements in a furnace," J. Opt. Soc. Am. 70, 1372-1375 (1980)