Abstract
Magnetic hyperfine interaction constants (A factors) have been determined for six excited levels, 4d5s5p z 2Do1/2, 3/2, 5/2, 7/2,and z 4Do1/2,3/2,5/2,7/2, and the two ground-term levels 4d5s2 a 2D32,5/2/ in yttrium I, using an improved method of saturated absorption spectroscopy in a sputtered vapour. The results for z 4Do12/ and z 4Do7/2 are new, while those for the other excited levels confirm recently reported A factors obtained by level-crossing optogalvanic spectroscopy and by absorption line narrowing. The measured A factors for the excited levels are compared with results of LS-coupling calculations for spd configurations.
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