Comparison of hyperfine anomalies in the 5 S1 / 2 and 6 S1 / 2 levels of 85Rb and 87Rb Article uri icon

abstract

  • We observe a hyperfine anomaly in the measurement of the hyperfine splitting of the 6 S1 / 2 excited level in rubidium. We perform two step spectroscopy using the 5 S1 / 2 → 5 P1 / 2 → 6 S1 / 2 excitation sequence. We measure the splitting of the 6 S1 / 2 level and obtain for the magnetic dipole constants of 85Rb and 87Rb A = 239.18 (4) MHz and A = 807.66 (8) MHz, respectively. The hyperfine anomaly difference of 87δ85 = - 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 5 S1 / 2 ground state. © 2007 Elsevier B.V. All rights reserved.

publication date

  • 2007-01-01