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Numerical simulation of multipactor on dielectric surface in high direct current field

Cai Li-Bing Wang Jian-Guo Zhu Xiang-Qin

Numerical simulation of multipactor on dielectric surface in high direct current field

Cai Li-Bing, Wang Jian-Guo, Zhu Xiang-Qin
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  • Received Date:  16 May 2010
  • Accepted Date:  25 September 2010
  • Published Online:  05 April 2011

Numerical simulation of multipactor on dielectric surface in high direct current field

  • 1. Northwest Institute of Nuclear Technology, Xi'an 710024, China;
  • 2. School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China

Abstract: The numerical simulation of multipactor in the dielectric surface breakdown in high direct current field is realized by using the particle-in-cell method. And the influence of the strength of the high direct current field, smoothness of the dielectric surface and secondary electron yield coefficient on the multipactor are researched through the simulation of multipactor. Finally, the influence of the tilting of high direct current field and external magnetic field on the multipactor are also investigated. The results show that selecting of the dielectric with low secondary electron yield coefficient and tilting of high direct current field can reduce the degree of multipactor, and for the external magnetic field the degree of multipactor decreases effectively only when the external magnetic field exceeds a certain value.

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