Effect of the Discharge Voltage on the Performance of the Hall Thruster  

作　　者：段萍 刘广睿 边兴宇 陈龙 殷燕 曹安宁 

机构地区：[1]Department of Physics,Dalian Maritime University

出　　处：《Plasma Science and Technology》2016年第4期382-387,共6页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.11375039 and 11275034);the Fundamental Research Funds for the Central Universities,China(Nos.3132014328 and 3132015142)

摘　　要：In this paper,a two-dimensional physical model is established according to the discharging process in the Hall thruster discharge channel using the particle-in-cell method.The influences of discharge voltage on the distributions of potential,ion radial flow,and discharge current are investigated in a fixed magnetic field configuration.It is found that,with the increase of discharge voltage,especially during 250-650 V,the ion radial flow and the collision frequency between ions and the wall are decreased,but the discharge current is increased.The electron temperature saturation is observed between 400-450 V and the maximal value decreases during this region.When the discharge voltage reaches 700 V,the potential distribution in the axis direction expands to the anode significantly,the ionization region becomes close to the anode,and the acceleration region grows longer.Besides,ion radial flow and the collision frequency between ions and the wall are also increased when the discharge voltage exceeds 650 V.In this paper,a two-dimensional physical model is established according to the discharging process in the Hall thruster discharge channel using the particle-in-cell method.The influences of discharge voltage on the distributions of potential,ion radial flow,and discharge current are investigated in a fixed magnetic field configuration.It is found that,with the increase of discharge voltage,especially during 250-650 V,the ion radial flow and the collision frequency between ions and the wall are decreased,but the discharge current is increased.The electron temperature saturation is observed between 400-450 V and the maximal value decreases during this region.When the discharge voltage reaches 700 V,the potential distribution in the axis direction expands to the anode significantly,the ionization region becomes close to the anode,and the acceleration region grows longer.Besides,ion radial flow and the collision frequency between ions and the wall are also increased when the discharge voltage exceeds 650 V.

关 键 词：Hall thruster particle-in-cell discharge voltage discharge efficiency 

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]