Measurement of the hyperfine splitting of the 6S$_{1/2}$ level in rubidium

Details Measurement of the hyperfine splitting of the 6S$_{1/2}$ level in rubidium Measurement of the hyperfine splitting of the 6S$_{1/2}$ level in rubidium

2008-07-09

arxiv.org/abs/0807.1438v1

Phys. Rev. A 78, 012502 (2008)

Physics

Atomic Physics

12 pages, 14 figures

Scientific paper

10.1103/PhysRevA.78.012502

We present a measurement of the hyperfine splitting of the 6S$_{1/2}$ excited level of rubidium using two photon absorption spectroscopy in a glass cell. The values we obtain for the magnetic dipole constant A are 239.18(03) MHz and 807.66(08) MHz for $^{85}$Rb and $^{87}$Rb, respectively. The combination of the magnetic moments of the two isotopes and our measurements show a hyperfine anomaly in this atomic excited state. The observed hyperfine anomaly difference has a value of $_{87}\delta_{85}=-0.0036(2)$ due to the finite distribution of nuclear magnetization, the Bohr-Weisskopf effect.

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