Direct measurement of velocity-changing collision cross sections by laser optical pumping

G. Shimkaveg, W. W. Quivers, Jr., R. R. Dasari, and M. S. Feld
Phys. Rev. A 48, 1409 – Published 1 August 1993
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Abstract

We extend the theory of velocity-selective laser optical pumping in atomic vapors, allowing for arbitrarily rapid velocity-changing collisional rates. The results yield a simple relationship between the line-shape areas of narrow spectroscopic features present in optically pumped samples. This relationship gives directly the ground- and excited-state velocity-changing collision rates and cross sections. We use the results to analyze the data from a laser optical-pumping experiment in Li6 vapor perturbed by Ar buffer gas.

  • Received 10 February 1993

DOI:https://doi.org/10.1103/PhysRevA.48.1409

©1993 American Physical Society

Authors & Affiliations

G. Shimkaveg

  • L-43, Lawrence Livermore National Laboratory, Livermore, California 94550

W. W. Quivers, Jr.

  • Department of Physics, Wellesley College, Wellesley, Massachusetts 02181

R. R. Dasari and M. S. Feld

  • George R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

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Vol. 48, Iss. 2 — August 1993

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