2004
DOI: 10.1103/physreva.70.042504
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Lifetimes of the9sand8plevels of atomic francium

Abstract: We use time-correlated single-photon counting techniques on a sample of 210 Fr atoms confined and cooled in a magneto-optical trap to measure the lifetimes of the 9S 1/2 , 8P 3/2 , and 8P 1/2 excited levels. We populate the 9S 1/2 level by two-photon resonant excitation through the 7P 1/2 level. The direct measurement of the 9S 1/2 decay through the 7P 3/2 level at 851 nm gives a lifetime of 107.53± 0.90 ns. We observe the decay of the 9S 1/2 level through the 8P 3/2 level at 423 nm and the 8P 1/2 level at 433… Show more

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Cited by 73 publications
(199 citation statements)
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“…[29], we change the value of τ 6P 3/2 from 108 ns to 118 ns with an increase of 0.5 ns each step, and do the fitting process to extract a new τ 5D 5/2 for each new value of τ 6P 3/2 . This scanning range has covered 3σ range of the experimental result of τ 6P 3/2 .…”
Section: Systematic Effectsmentioning
confidence: 99%
“…[29], we change the value of τ 6P 3/2 from 108 ns to 118 ns with an increase of 0.5 ns each step, and do the fitting process to extract a new τ 5D 5/2 for each new value of τ 6P 3/2 . This scanning range has covered 3σ range of the experimental result of τ 6P 3/2 .…”
Section: Systematic Effectsmentioning
confidence: 99%
“…The uncertainty of the 5P 3/2 state lifetime propagates to the uncertainty of the 6s level lifetime. Using Bayesian statistics the contribution to the uncertainty (σ B6s ) due to the 5P 3/2 level is given by [5] …”
Section: Results and Comparison With Theorymentioning
confidence: 99%
“…This two step transition method is well established both for vapor cells [14] and MOTs [5,6] in alkalis. Figure 1 shows the energy levels of 85 Rb (I = 5/2) relevant to the lifetime measurement.…”
Section: Experimental Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…15 Our group has used it to measure the lifetime of the 7p, 7d and 9s levels in Fr 8,9,16,17 and of the 5p levels in Rb.…”
mentioning
confidence: 99%