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Light-induced drift of molecules in atomic gases

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  • Viehland, Larry A.

Abstract

A kinetic theory is presented for the light-induced drift of molecules with degenerate energy levels that are immersed in a large excess of an atomic buffer gas and excited, in a velocity-selective way, by a weak, linearly polarized laser. An iterative procedure is outlined for systematically solving the kinetic equation to obtain results, directly from the molecule/buffer interaction potentials, that have converged within some predetermined level of accuracy. When applied to the model of strong collisions, the first iteration yields the exact results for low laser intensities. The general formalism suggests a new model of light-induced drift that provides for velocity-dependent collision frequencies and accounts for recent anomalous results in ethene.

Suggested Citation

  • Viehland, Larry A., 1992. "Light-induced drift of molecules in atomic gases," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 184(1), pages 98-126.
  • Handle: RePEc:eee:phsmap:v:184:y:1992:i:1:p:98-126
    DOI: 10.1016/0378-4371(92)90160-R
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    References listed on IDEAS

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    1. Gel'mukhanov, F.Kh. & Il'ichov, L.V. & Shalagin, A.M., 1986. "Kinetic theory of light-induced drift of gas particles," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 137(3), pages 502-530.
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