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Effects of pressure and incident power on self-organization pattern structure during microwave breakdown in high pressure air

Zhu Guo-Qiang Jean-Pierre Boeuf Li Jin-Xian

Effects of pressure and incident power on self-organization pattern structure during microwave breakdown in high pressure air

Zhu Guo-Qiang, Jean-Pierre Boeuf, Li Jin-Xian
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  • Abstract views:  1745
  • PDF Downloads:  477
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Publishing process
  • Received Date:  27 May 2012
  • Accepted Date:  24 June 2012
  • Published Online:  05 December 2012

Effects of pressure and incident power on self-organization pattern structure during microwave breakdown in high pressure air

  • 1. School of Astronautics, Northwestern Polytechnical University, Xi'an 710072, China;
  • 2. Laboratoire Plasma et Conversion d'Energie (LAPLACE), INPT, UPS, Université de Toulouse, 118 Route de Narbonne, F-31062 Toulouse Cedex 9, France
Fund Project:  Project supported by the Fundamental Research Fund of Northwestern Polytechnical University, China (Grant No. JC20120217).

Abstract: Pressure and microwave power are the most important parameters during microwave breakdown in air and affect the self-organization plasma pattern structure and its propagation directly. In order to study the effects of pressure and microwave power, an effective-diffusion fluid plasma equation is solved together with Maxwell's equations, and the double grid method is also used to meet the different grid size requirement of plasma equation and finite-difference-time-domain for Maxwell's equations. The numerical results show that with lower pressure the plasma behaves as a more diffuse plasmoid instead of a well defined plasma pattern structure under higher pressure, and the increase of incident microwave power will lead to a rapid growth of the front propagation velocity and a well separated and sharp pattern structure, and the higher incident power also results in jump-like front propagation.

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