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arXiv · 0802.1439

Comparison of hyperfine anomalies in the 5S_{1/2} and 6S_{1/2} levels of ^{85}Rb and ^{87}Rb

A. Perez Galvan·Y. Zhao·L. A. Orozco·E. Gomez·A. D. Lange·F. Baumer·G. D. Sprouse
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Abstract

We observe a hyperfine anomaly in the measurement of the hyperfine splitting of the 6S_{1/2} excited level in rubidium. We perform two step spectroscopy using the 5S_{1/2}->5P_{1/2}->6S_{1/2} excitation sequence. We measure the splitting of the 6S1/2 level and obtain for the magnetic dipole constants of ^{85}Rb and ^{87}Rb A = 239.18(4) MHz and A=807.66(8) MHz, respectively. The hyperfine anomaly difference of_{87}delta_{85}=-0.0036(2) comes from the Bohr Weisskopf effect: a correction to the point interaction between the finite nuclear magnetization and the electrons, and agrees with that obtained in the 5S_{1/2} ground state.

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A. Perez Galvan, Y. Zhao, L. A. Orozco, E. Gomez, A. D. Lange, F. Baumer, G. D. Sprouse. 2008-02-11. Comparison of hyperfine anomalies in the 5S_{1/2} and 6S_{1/2} levels of ^{85}Rb and ^{87}Rb. https://doi.org/10.1016/j.physletb.2007.09.042

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