Study on breathing mode oscillation suppression of self-excited Hall thrusters

被引：9

作者：

Wei Liqiu ^{[1
]}

Han Ke ^{[1
]}

Wang Chunsheng ^{[1
]}

Li Hong ^{[1
]}

Zhang ChaoHai ^{[1
]}

Yu Daren ^{[1
]}

机构：

[1] Harbin Inst Technol, Lab Plasma Prop, Harbin 150001, Peoples R China

来源：

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A | 2012年 / 30卷 / 06期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

closed loop systems; electromagnets; ionisation; magnetic field effects; numerical analysis; pneumodynamics; STATIONARY PLASMA THRUSTER;

D O I：

10.1116/1.4758788

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

It is found that the breathing mode oscillation of the discharge current is suppressed notably in a Hall thruster operating with the electromagnets driven in series by the discharge current. In order to study the physical mechanism of this suppression, the ionization distribution is measured experimentally and the spatiotemporal features of the ionization front motion are studied numerically with a one-dimensional quasineutrality hydrodynamic model. Results show that the ionization front motion is restricted in a small range due to the closed-loop feedback control of the magnetic field. The steady-state ionization distribution is narrow and condensed when the electromagnetic coils connect in series with the discharge circuit. The different magnetic field excitation accompanied by different ionization characteristics is the main reason for the suppression of the discharge-current low-frequency breathing mode oscillation. (C) 2012 American Vacuum Society. [http://dx.doi.org/10.1116/1.4758788]

引用

页数：5