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3D simulation of the electron energy distribution in negative hydrogen ion source

Yang Chao Liu Da-Gang Liu La-Qun Xia Meng-Zhong Wang Hui-Hui Wang Xiao-Ming

3D simulation of the electron energy distribution in negative hydrogen ion source

Yang Chao, Liu Da-Gang, Liu La-Qun, Xia Meng-Zhong, Wang Hui-Hui, Wang Xiao-Ming
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  • Received Date:  04 November 2011
  • Accepted Date:  21 November 2011
  • Published Online:  05 August 2012

3D simulation of the electron energy distribution in negative hydrogen ion source

  • 1. University of electronic Science and Technology of China, Chengdu 610054, China
Fund Project:  Project supported by the State Key Development Program for Basic Research of China (Grant No. 2007CB310401).

Abstract: In this paper, we calculate permanent magnet theoretically for a multicusp ion source Coulomb collision between electrons is treated with the "binary collision" model and collisions between the electrons and hydrogen species are treated with the "null-collision" method. A 3D PIC-MCC simulation algorithm is developed, and based on this algorithm the electron deposition process in multicusp ion source is simulated, and the multicusp magnetic field effects on the electron energy distribution and spatial distribution are analyzed. The results show that the spatial non-uniformity of electron distribution comes from high energy electron B× ▽B drift in the filter field.

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