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Title: Three dimensional simulations of pattern formation during high-pressure, freely localized microwave breakdown in air

Recent experiments have demonstrated that a freely localized 100 GHz microwave discharge can propagate towards the microwave source with high speed, forming a complex pattern of self-organized filaments. We present three-dimensional simulations of the formation and propagation of such patterns that reveal more information on their nature and interaction with the electromagnetic waves. The developed three-dimensional Maxwell-plasma solver permits the study of different forms of incident field polarization. Results for linear and circular polarization of the wave are presented and comparisons with recent experiments show a good overall agreement. The three dimensional simulations provide a quantitative analysis of the parameters controlling the time and length scales of the strongly non-linear plasma dynamics and could be useful for potential microwave plasma applications such as aerodynamic flow and combustion control.
Authors:
;  [1] ;  [2]
  1. LAPLACE (Laboratoire Plasma et Conversion d'Energie), Université de Toulouse, UPS, INPT, 118 route de Narbonne, F-31062 Toulouse Cedex 9 (France)
  2. ONERA - The French Aerospace Lab, 2 Avenue édouard Belin, 31000 Toulouse (France)
Publication Date:
OSTI Identifier:
22407958
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 12; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AIR; BREAKDOWN; COMBUSTION CONTROL; COMPARATIVE EVALUATIONS; FILAMENTS; GHZ RANGE; HIGH-FREQUENCY DISCHARGES; MICROWAVE RADIATION; PLASMA; POLARIZATION; PRESSURE RANGE MEGA PA 10-100; SIMULATION; THREE-DIMENSIONAL CALCULATIONS