Temperature Dependence of the Helium Metastability-Exchange Cross Section in the Range 15-115 °K

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1 April 1972

journal article
research article
Published by American Physical Society (APS) in Physical Review A

Vol. 5 (4) , 1909-1918
https://doi.org/10.1103/physreva.5.1909

Abstract

An optical-pumping experiment has been used to measure the cross sections for the exchange of metastability between

{He}^{3}

atoms in the

1 {}^{1}S_{0}

ground state and the

2 {}^{3}S_{1}

metastable state in the temperature range from 15 to 115 °K. A density-matrix treatment of the

{He}^{3}

system yields a new relationship between observed linewidth and cross section.

Keywords

This publication has 13 references indexed in Scilit:

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