Lifetimes of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>9</mml:mn><mml:mi>s</mml:mi></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>8</mml:mn><mml:mi>p</mml:mi></mml:mrow></mml:math>levels of atomic francium

Aubin, S.; Gomez, E.; Orozco, L. A.; Sprouse, G. D.

doi:10.1103/physreva.70.042504

Cited by 73 publications

(199 citation statements)

References 17 publications

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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%

Lifetime measurements of the5dstates of rubidium

2008

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We present lifetime measurements of the 5D 3/2 and 5D 5/2 states of rubidium using the time correlated single photon counting method. We perform the experiment in a magneto-optical trap of 87 Rb atoms using a two-step excitation with the trap laser at 780 nm as the first step. We record the 761.9 nm fluorescence from the decay of the 5D 3/2 state to the 5P 1/2 state, and measure the lifetime of the 5D 3/2 state τ = 246.3(1.6) ns. We record the 420.2 nm fluorescence from the cascade decay of the 5D 5/2 state to the 5S 1/2 state through the 6P 3/2 state, and extract the lifetime of the 5D 5/2 state τ = 238.5(2.3) ns.

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Section: Systematic Effectsmentioning

confidence: 99%

Lifetime measurements of the5dstates of rubidium

2008

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“…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%

“…[1] We have previously measured lifetimes in francium and rubidium only in a MOT. [2,3,4,5,6,7] We use the same apparatus except for the source of atoms so we carefully address the different systematic effects that are unique to each one of them. The present measurements are necessary to understand systematic effects on the measurement of the equivalent level in francium, the 8s level.…”

Section: Introductionmentioning

confidence: 99%

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Lifetime measurement of the6slevel of rubidium

et al. 2005

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We present a lifetime measurements of the 6s level of rubidium. We use a time-correlated singlephoton counting technique on two different samples of rubidium atoms. A vapor cell with variable rubidium density and a sample of atoms confined and cooled in a magneto-optical trap. The 5P 1/2 level serves as the resonant intermediate step for the two step excitation to the 6s level. We detect the decay of the 6s level through the cascade fluorescence of the 5P 3/2 level at 780 nm. The two samples have different systematic effects, but we obtain consistent results that averaged give a lifetime of 45.57 ± 0.17 ns.

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“…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.…”

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confidence: 99%

Lifetime and hyperfine splitting measurements on the 7s and 6p levels in rubidium

et al. 2004

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We present lifetime measurements of the 7S 1/2 level and the 6p manifold of Rb. We use a time-correlated single-photon counting technique on a sample of 85 Rb atoms confined and cooled in a magneto-optical trap. The upper state of the 5P 1/2 repumping transition serves as the resonant intermediate level for two-photon excitation of the 7s level. A probe laser provides the second step of the excitation, and we detect the decay of the atomic fluorescence to the 5P 3/2 level at 741 nm. The decay process feeds the 6p manifold which decays to the 5s ground state emitting uv photons. We measure lifetimes of 88.07 ± 0.40 ns and 120.7 ± 1.2 ns for the 7S 1/2 level and 6p manifold, respectively; while the hyperfine splitting of the 7S 1/2 level is 282.6 ± 1.6 MHz.The agreement with theoretical calculations confirms the understanding of the wavefunctions involved, and provides confidence on the possibility of extracting weak interaction constants from a Parity Non-Conservation measurement.

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Lifetimes of the9sand8plevels of atomic francium

Cited by 73 publications

References 17 publications

Lifetime measurements of the5dstates of rubidium

Lifetime measurements of the5dstates of rubidium

Lifetime measurement of the6slevel of rubidium

Lifetime and hyperfine splitting measurements on the 7s and 6p levels in rubidium

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