Confinement effect of cylindrical-separatrix-type magnetic field on the plume of magnetic focusing type Hall thruster

被引：26

作者：

Yu, Daren ^{[1
]}

Meng, Tianhang ^{[1
]}

Ning, Zhongxi ^{[1
]}

Liu, Hui ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China

来源：

PLASMA SOURCES SCIENCE & TECHNOLOGY | 2017年 / 26卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Hall thruster; magnetic field; plume; hollow cathode; separatrix; STATIONARY PLASMA THRUSTER; NEAR-FIELD;

D O I：

10.1088/1361-6595/aa6425

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A magnetic focusing type Hall thruster was designed with a cylindrical magnetic seperatrix. During the process of a hollow cathode crossing the separatrix, the variance of plume parameter distribution was monitored. Results show that the ion flux on the large spatial angle is significantly lower when the hollow cathode is located in the inner magnetic field. This convergence effect is preserved even in a distant area. A mechanism was proposed for plume divergence from the perspective of cathode-to-plume potential difference, through which the confinement effect of cylindrical-separatrix-type magnetic field on thruster plume was confirmed and proposed as a means of plume protection for plasma propulsion devices.

引用

页数：5

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