Abstract
To determine the accuracy to which hyperfine splittings can be measured using a cw dye laser with rf sideband tuning, a series of atomic beam experiments with59Co was performed. One hyperfine splitting of the first excited metastable atomic state was measured and compared with the results for the same splitting from magnetic rf resonance experiments. The uncertainty with the methods applied was found to be about 0.05 to 1% of the experimental linewidth in general; it is ±20 kHz or ±0.05% of the linewidth in the present Co experiment. The hyperfine splitting constants of the 3d 8 4p 2 F 7/2 state were found to beA=419.3(9) MHz,B=−77(17) MHz.
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Dedicated to Professor Siegfried Penselin on the occasion of his 60th, birthday