Lifetime Measurement of the 6s Level of Rubidium

Abstract

We present a lifetime measurements of the 6s level of rubidium. We use a time-correlated single-photon 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.

10 pages, 9 figures

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• Violations of fundamental symmetries in atoms and tests of unification theories of elementary particles
• Relativistic many-body calculations of electric-dipole matrix elements, lifetimes and polarizabilities in rubidium
• Combined effect of coherent Z exchange and the hyperfine interaction in atomic PNC
• A new Manifestation of Atomic Parity Violation in Cesium: a Chiral Optical Gain induced by linearly polarized 6S-7S Excitation
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• A simple, narrow, and robust atomic frequency reference at 993 nm exploiting the rubidium (Rb) $5S_{1/2}$ to $6S_{1/2}$ transition using one-color two-photon excitation
• Measurement of the lifetime of the $7s^2{S}_{1/2}$ state in atomic cesium using asynchronous gated detection
• Lifetime measurement of the 5s5p 1P1 state in strontium
• Lifetime determination of the 5d${}^2$~${}^3$F${}_2$ state in barium using trapped atoms