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Off-diagonal hyperfine interaction between the 6p1/2 and 6p3/2 levels in 133Cs

W. R. Johnson·H. C. Ho·Carol E. Tanner·Andrei Derevianko
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Abstract

The off-diagonal hyperfine interaction between the 6p1/2 and 6p3/2 states in 133Cs is evaluated in third-order MBPT giving 37.3 Hz and 48.3 Hz, respectively, for second-order energies of the 6p3/2 F=3 and F=4 levels. This result is a factor of 10 smaller than one obtained from an uncorrelated first-order Dirac-Hartree-Fock calculation and used in the analysis of a recent high-precision (< 2 kHz) measurement of the 6p3/2 hyperfine structure [Gerginov et al. Phys. Rev. Lett. 91, 72301 (2003)]. The factor of 10 difference has negligible effect on the conclusions of the recent experiment but will become important for experiments carried out at a precision of better than 1 kHz.

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W. R. Johnson, H. C. Ho, Carol E. Tanner, Andrei Derevianko. 2004-04-21. Off-diagonal hyperfine interaction between the 6p1/2 and 6p3/2 levels in 133Cs. https://doi.org/10.1103/physreva.70.014501

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