ar X iv : p hy si cs / 0 50 20 90 v 1 1 6 Fe b 20 05 Lifetime Measurement of the 6 s Level of Rubidium
نویسنده
چکیده
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 5P1/2 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 5P3/2 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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