Simulation of the effect of a magnetically insulated anode on a low-power cylindrical Hall thruster  

作　　者：Yongjie DING Hong LI Boyang JIA Peng LI Liqiu WEI Yu XU Wuji PENG Hezhi SUN Yong CAO Daren YU 丁永杰;李鸿;贾伯阳;李朋;魏立秋;徐宇;彭武吉;孙鹤芝;曹勇;于达仁(1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, People＇s Republic of China; 2.Harbin Institute of Technology （Shenzhen）, Shenzhen 518055, People＇s Republic of China)

机构地区：[1]School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, People'sRepublic of China [2]Harbin Institute of Technology (Shenzhen), Shenzhen 518055, People's Republic of China

出　　处：《Plasma Science and Technology》2018年第3期156-162,共7页等离子体科学和技术（英文版）

基　　金：financially supported by National Natural Science Foundation of China(Grant Nos.51777045 and51477035);Shenzhen Technology Project(Project Nos.JCYJ20160226201347750 and JCYJ20150529115038093)

摘　　要：The intersection point of the characteristic magnetic field line（CMFL） crossing the anode boundary with the discharge channel wall, and its influence on thruster performance and the energy and flux of ions bombarding the channel wall, have been studied numerically. The simulation results demonstrate that with the increase in distance from the crossover point of the CMFL with the channel wall to the bottom of the thruster channel, the ionization rate in the discharge channel gradually increases; meanwhile, the ion energy and ion current density bombarding the channel wall decreases. When the point of the CMFL with the channel wall is at the channel outlet, the thrust, specific impulse, and efficiency are at a maximum, while the ion energy and ion current density bombarding the channel wall are at a minimum. Therefore, to improve the performance and lifetime of the thruster, it is important to control the point of intersection of the CMFL with the channel wall.The intersection point of the characteristic magnetic field line（CMFL） crossing the anode boundary with the discharge channel wall, and its influence on thruster performance and the energy and flux of ions bombarding the channel wall, have been studied numerically. The simulation results demonstrate that with the increase in distance from the crossover point of the CMFL with the channel wall to the bottom of the thruster channel, the ionization rate in the discharge channel gradually increases; meanwhile, the ion energy and ion current density bombarding the channel wall decreases. When the point of the CMFL with the channel wall is at the channel outlet, the thrust, specific impulse, and efficiency are at a maximum, while the ion energy and ion current density bombarding the channel wall are at a minimum. Therefore, to improve the performance and lifetime of the thruster, it is important to control the point of intersection of the CMFL with the channel wall.

关 键 词：magnetically insulated anode cylindrical Hall thruster PERFORMANCE 

分 类 号：V439.4[航空宇航科学与技术—航空宇航推进理论与工程]