Theory and Modeling of Self-Organization and Propagation of Filamentary Plasma Arrays in Microwave Breakdown at Atmospheric Pressure

Jean-Pierre Boeuf, Bhaskar Chaudhury, and Guo Qiang Zhu
Phys. Rev. Lett. 104, 015002 – Published 6 January 2010

Abstract

High power microwave breakdown at atmospheric pressure leads to the formation of filamentary plasma arrays that propagate toward the source. A two-dimensional model coupling Maxwell equations with plasma fluid equations is used to describe the formation of patterns under conditions similar to recent experiments and for a wave electric field perpendicular to the simulation domain or in the simulation domain. The calculated patterns are in excellent qualitative agreement with the experiments, with good quantitative agreement of the propagation speed of the filaments. The propagation of the plasma filaments is due to the combination of diffusion and ionization. Emphasis is put on the fact that free electron diffusion (and not ambipolar diffusion) associated with ionization is responsible for the propagation of the front.

  • Figure
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  • Received 19 August 2009

DOI:https://doi.org/10.1103/PhysRevLett.104.015002

©2010 American Physical Society

Authors & Affiliations

Jean-Pierre Boeuf1,2, Bhaskar Chaudhury1, and Guo Qiang Zhu1

  • 1Université de Toulouse; UPS, INPT; LAPLACE (Laboratoire Plasma et Conversion d’Energie); 118 route de Narbonne, F-31062 Toulouse cedex 9, France
  • 2CNRS; LAPLACE; F-31062 Toulouse, France

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Vol. 104, Iss. 1 — 8 January 2010

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