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Numerical simulation study on characteristic parameters of microcavity discharge in argon

Zhu Yu Zhu Guo-Qiang Xia Guang-Qing Xue Wei-Hua Chen Mao-Lin

Numerical simulation study on characteristic parameters of microcavity discharge in argon

Zhu Yu, Zhu Guo-Qiang, Xia Guang-Qing, Xue Wei-Hua, Chen Mao-Lin
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  • Received Date:  11 May 2010
  • Accepted Date:  31 July 2010
  • Published Online:  15 January 2011

Numerical simulation study on characteristic parameters of microcavity discharge in argon

  • 1. (1)Laboratory on Plasma and Conversion of Energy(LAPLACE), Paul Sabatier University, Toulouse 31062, France; (2)School of Aeronautics and Astronautics, State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China; (3)School of Astronautics, Northwestern Polytechnical University, Xi'an 710072, China

Abstract: The two-dimensional numerical model used is based on solutions of fluid equations in the drift-diffusion approximation for the electron and ion transport coupled with Poisson’s equation for electric field to simulate microcavity discharge qualities. The computation results show the potential profile, electron density distribution, ion density distribution, and electron temperature spatial distribution at the argon pressure of 100 Torr. The potential contour shows that the radial component of the electric field becomes very important as the forming of the cathode sheath. The results indicate the peak electron density is 1020 m-3, and the electron temperature is on the order of several to tens of eV.

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