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On a density matrix equation for atomic systems subject to an external radiation field interaction and collision processes

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Czechoslovak Journal of Physics B Aims and scope

Abstract

Approximations are examined which are necessary for a density matrix equation of Rautian's form describing the interaction of a gas medium with an external radiation field by considering collision processes between active atoms as well as active and perturber atoms. The collision integrals of the kinetic density matrix equation calculated by the Bogolyubov method involve exitation processes, inelastic and elastic collisions. The features of phase- and velocity changing collisions are discussed by specializing the collision terms. Some phenomenological collision models for velocity changing collisions are examined and conditions for their validity given.

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Authors and Affiliations

  1. Department of Physics, Friedrich Schiller University, Max-Wien-Platz 1, 69, Jena, GDR

    D. Kühlke

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  1. D. Kühlke
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Kühlke, D. On a density matrix equation for atomic systems subject to an external radiation field interaction and collision processes. Czech J Phys 25, 644–659 (1975). https://doi.org/10.1007/BF01591020

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  • DOI: https://doi.org/10.1007/BF01591020

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