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Physics of Electronic and Atomic Collisions: ICPEAC VIII

7 2 P 1/2 - 7 2 P 3/2 Mixing in Cesium, Induced in Collisions with Noble Gas Atoms

I. N. Siara, H. S. Kwong, L. Krause

Published Jan 1, 1973• 0 citations
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Sensitized Fluorescence in Vapors of Alkali Atoms XIV. Temperature Dependence of Cross Sections for 72P1/2–72P3/2 Mixing in Cesium, Induced in Collisions with Noble Gas Atoms

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The cross sections for 72P1/2–72P3/2 excitation transfer in cesium, induced in collisions with noble gas atoms, have been determined in a series of sensitized fluorescence experiments at temperatures ranging from 405 to 630 K. The cross sections which lie in the range 0.06–20 Å2, exhibit a temperature dependence which, however, is less pronounced than in the more adiabatic case of the cesium resonance doublet.

Canadian Journal of Physics•Jun 1, 1974•15 citations

mJ Mixing in Oriented 6P122 Cesium Atoms, Induced in Collisions with Noble Gases

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The cross sections for disorientation of magnetically oriented $6^{2}P_{\frac{1}{2}}$ cesium atoms, induced in collisions with noble gases, have been determined using Zeeman-scanning techniques at kilogauss magnetic fields. The ${m}_{J}=\ensuremath{-}\frac{1}{2}$, ${m}_{I}=\ensuremath{-}\frac{7}{2}$ hyperfine Zeeman substate was populated selectively by irradiating the cesium-vapor-noble-gas mixture with cesium-resonance radiation, and collisional transitions to the ${m}_{J}=+\frac{1}{2}$, ${m}_{I}=\ensuremath{-}\frac{7}{2}$ substate were monitored by measurements of the relative intensities of the ${\ensuremath{\sigma}}^{\ensuremath{-}}$ and ${\ensuremath{\sigma}}^{+}$ components in resonance fluorescence observed in the direction parallel to the magnetic field. The following cross sections were obtained: Cs-He, 11.8 ${\mathrm{\AA{}}}^{2}$; Cs-Ne, 4.7 ${\mathrm{\AA{}}}^{2}$; Cs-Ar, 10.7 ${\mathrm{\AA{}}}^{2}$; Cs-Kr, 37.9 ${\mathrm{\AA{}}}^{2}$; Cs-Xe, 71.7 ${\mathrm{\AA{}}}^{2}$.

Physical Review A•Jul 1, 1972•13 citations
Coherence transfer between the 3sup2sup 2sup2P/sub 1/2/ and 3sup2sup 2sup2P/sub 3/2/ states in sodium, induced in collisions with noble gas atoms
Disorientation of Na(3sup2sup 2sup2P1/2) atoms, induced in collisions with noble gases
The cross sections for disorientation of magnetically oriented 62P126^{2}P_{\frac{1}{2}}62P21​​ cesium atoms, induced in collisions with noble gases, have been determined using Zeeman-scanning techniques at kilogauss magnetic fields. The ${m}_{J}=\ensuremath{-}\frac{1}{2}$, ${m}_{I}=\ensuremath{-}\frac{7}{2}$ hyperfine Zeeman substate was populated selectively by irradiating the cesium-vapor-noble-gas mixture with cesium-resonance radiation, and collisional transitions to the mJ=+12{m}_{J}=+\frac{1}{2}mJ​=+21​, ${m}_{I}=\ensuremath{-}\frac{7}{2}$ substate were monitored by measurements of the relative intensities of the ${\ensuremath{\sigma}}^{\ensuremath{-}}$ and ${\ensuremath{\sigma}}^{+}$ components in resonance fluorescence observed in the direction parallel to the magnetic field. The following cross sections were obtained: Cs-He, 11.8 A˚2{\mathrm{\AA{}}}^{2}A˚2; Cs-Ne, 4.7 A˚2{\mathrm{\AA{}}}^{2}A˚2; Cs-Ar, 10.7 A˚2{\mathrm{\AA{}}}^{2}A˚2; Cs-Kr, 37.9 A˚2{\mathrm{\AA{}}}^{2}A˚2; Cs-Xe, 71.7 A˚2{\mathrm{\AA{}}}^{2}A˚2.