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Lifetime and hyperfine splitting measurements on the 7s and 6p levels in rubidium | | E. Gomez
; S. Aubin
; L. A. Orozco
; G. D. Sprouse
; | | Date: |
16 Sep 2004 | | Subject: | Atomic Physics | physics.atom-ph | | Affiliation: | 1 and 2), and G. D. Sprouse ( Department of Physics and Astronomy, State University of New York, Stony Brook, Stony Brook, New York, Department of Physics, University of Maryland, College Park, Maryland | | Abstract: | We present lifetime measurements of the 7S1/2 level and the 6p manifold of rubidium. We use a timecorrelated single-photon counting technique on a sample of 85Rb atoms confined and cooled in a magneto-optic trap. The upper state of the 5P1/2 repumping transition serves as the resonant intermediate level for twophoton excitation of the 7s level. A probe laser provides the second step of the excitation, and we detect the decay of atomic fluorescence to the 5P3/2 level at 741 nm. The decay process feeds the 6p manifold that decays to the 5s ground state emitting UV photons. We measure lifetimes of 88.07 +- 0.40 and 120.7 +- 1.2 ns for the 7S1/2 level and 6p manifold, respectively; the hyperfine splitting of the 7S1/2 level is 282.6 +- 1.6 MHz. The agreement with theoretical calculations confirms the understanding of the wave functions involved and provides confidence on the possibility of extracting weak interaction constants from a parity nonconservation measurement. | | Source: | arXiv, physics/0409077 | | Services: | Forum | Review | PDF | Favorites | |
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