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Plasma Sci. Technol. ›› 2018, Vol. 20 ›› Issue (8): 085403.doi: 10.1088/2058-6272/aabedf

• Low Temperature Plasma • Previous Articles     Next Articles

Generation characteristics of a metal ion plasma jet in vacuum discharge

Jia TIAN (田甲), Wenzheng LIU (刘文正), Weisheng CUI (崔伟胜) and Yongjie GAO (高永杰)   

  

  1. School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, People’s Republic of China
  • Received:2018-02-14 Published:2018-04-13
  • Supported by:

    This work is supported by National Natural Science Foundation of China (No. 51577011).

Abstract:

To improve the performance of a metal ion plasma jet in vacuum discharge, an anode-insulated cone-cylinder electrode with insulating sleeve is proposed in this paper. Discharge characteristics and generation characteristics of plasma of the electrode are investigated, effects of diameter of insulating sleeve, variety of cathode material and length of the insulating sleeve on characteristics of metal ion plasma jet are discussed. Results indicate that a directional and steady plasma jet is formed by using the novel electrode with insulating sleeve under high vacuum conditions. Moreover, the properties of metal ion plasma jet are improved by using the aluminum cathode and thin and long insulating sleeve. The study provides strong support for research of vacuum metal ion plasma thruster and ion implantation technology.

Key words: vacuum-gap discharge, metal ion plasma jet, generation characteristics, anodeinsulated cone-cylinder electrode