Generation of strong Langmuir fields during optical breakdown of a dense gas

  • N. V. Vvedenskii
  • V. B. Gildenburg
Scientific Summaries
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Abstract

Results are presented from theoretical studies and computer simulations of the resonant excitation of Langmuir waves during the ionization of a homogeneous gas by high-intensity laser radiation. Two mechanisms for the formation of nonuniform resonant structures in the discharge are examined: plasma-resonance ionization instability, resulting in the density modulation along the electric field vector, and gas breakdown in the field of a transversely inhomogeneous laser beam (a Bessel beam produced by an axicon lens). In both cases, the transition of the plasma density through the critical value is accompanied by the generation of intense Langmuir waves, the formation of fast ionization fronts, and the appearance of long-lived quasi-turbulent states.

PACS numbers

52.50.Jm 52.35.−g 

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Copyright information

© MAIK "Nauka/Interperiodica" 2002

Authors and Affiliations

  • N. V. Vvedenskii
    • 1
  • V. B. Gildenburg
    • 1
  1. 1.Institute of Applied PhysicsRussian Academy of SciencesNizhni NovgorodRussia

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