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Stability of Stationary States for Molecular Gases under Velocity-Selective Excitation

  • Alexander V. Ghiner
  • Michael A. Vaksman
Conference paper

Abstract

During more than a decade, kinetic phenomena arising in gases under velocity-selective excitation have been the object of many studies (see, in particular, Refs. [1–6]). When the momentum relaxation rates v e for the excited and v g for the ground-state molecules are different, the macroscopic state of the gas entirely changes. Recently, the possibility of the existence of non-stationary regimes and the oscillatory dynamics in these conditions has been discussed [7,8]. These studies make the problem of the stability of the stationary solutions obtained under velocity-selective excitation quite important. This problem has been partially resolved [2] for a single-component resonant gas in the case when the rate of spontaneous relaxation γ is much higher than the frequency v of velocity-changing collisions, γ ≫ v. However, for the case γ ≤ v, the problem remained unsolved. Meanwhile, the latter situation is most typical for molecular vibrotational transitions where many of the experiments on the velocity-selective excitation are being done. The main purpose of the present work is to derive a criterion of stability for a mixture of a resonant molecular gas and a buffer gas using a simpler collision model, with a possible generalization to the case γ ≤ v.

Keywords

Oscillatory Dynamic Optic Comm Macroscopic State Specular Surface External Force Field 
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References

  1. 1.
    A.M. Dykhne and A.N. Starostin, Soy. Phys. Doklady 25, 188 (1980);Google Scholar
  2. A.M. Dykhne and A.N. Starostin, Soy. Phys. JETP 52, 612 (1980).Google Scholar
  3. 2.
    A.V. Ghiner, Optics Comm. 41, 27 (1982).CrossRefGoogle Scholar
  4. 3.
    G. Nienhuis, Phys. Rep. 138, 152 (1987).MathSciNetGoogle Scholar
  5. 4.
    S. Kryszewski and G. Nienhuis, J. Phys. B: At. Mol. Phys. 20, 3027 (1987).CrossRefGoogle Scholar
  6. 5.
    H.G.C. Werij and J.P. Woerdman, Phys. Rep. 169, 145 (1988).CrossRefGoogle Scholar
  7. 6.
    D.T. Mugglin and A.D. Streater, Optics Comm., 104, 165 (1993).CrossRefGoogle Scholar
  8. 7.
    M.A. Vaksman and A. Ben-Reuven. Talk presented at the 12th International Vacuum Congress/8th International Conference on Solid Surfaces, 12–16 October 1992, The Hague, The Netherlands. -Surf. Sci., 287 /288, 196 (1993).Google Scholar
  9. 8.
    F.Kh. Gel’mukhanov, G. Nienhuis, and T.I. Privalov. Phys. Rev. A 50, 2445 (1994).CrossRefGoogle Scholar
  10. 9.
    L.D. Landau and E.M. Lifshitz. Course of Theoretical Physics, v. 10. Physical Kinetics. Pergamon Press, Oxford-NY, 1981.Google Scholar

Copyright information

© Springer Science+Business Media New York 1996

Authors and Affiliations

  • Alexander V. Ghiner
    • 1
  • Michael A. Vaksman
    • 2
  1. 1.Departamento de FisicaUniversidade Federal Do Ceara, Campus Do PiciFortaleza-CearaBrazil
  2. 2.Department of ChemistryUniversity of Detroit MercyDetroitUSA

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