Spin-Orbit Relaxation of Cesium 7 ²D in Mixtures of Helium and Argon

Authors

Ricardo C. Davila
Glen P. Perram, Air Force Institute of Technology

Document Type

Article

Publication Date

3-2016

Abstract

Pulsed excitation on the two-photon Cs 6²S_1/2 -> 7²D_3/2,5/2 transition results in time-resolved fluorescence at 697 and 672 nm. The rates for fine-structure mixing between the 7²D_3/2,5/2 states have been measured for helium and argon rare-gas collision partners. The mixing rates are very fast, 1.26±0.05×10⁻⁹ cm³/atom s for He and 1.52±0.05×10⁻¹⁰ cm³/atom s for Ar, driven by the small energy splitting and large radial distribution for the valence electron. The quenching rates are considerably slower, 6.84±0.09×10⁻¹¹ and 2.65±0.04×10⁻¹¹ cm³/atom s for He and Ar, respectively. The current results are placed in context with similar rates for other alkali-metal–rare-gas collision pairs using adiabaticity arguments.

Comments

Plain-text title: Spin-Orbit Relaxation of Cesium 7 2D in Mixtures of Helium and Argon

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DOI

10.1103/PhysRevA.93.033418

Source Publication

Physical Review A

Recommended Citation

Davila, R. C., & Perram, G. P. (2016). Spin-orbit relaxation of cesium 7 2D in mixtures of helium and argon. Physical Review A, 93(3), 33418. https://doi.org/10.1103/PhysRevA.93.033418