Numerical simulation of magnetic pole sputtering of a cylindrical anode layer hall thruster

doi:10.16568/j.0254-6086.201901014

Abstract

Abstract:

A three dimensional particle in cell (PIC) model is applied to simulate discharge and sputtering process in Hall thruster with solid and hollow inner magnetic poles. The influences of discharge power and magnetic field on ion sputtering degree are investigated and analyzed. Simulation results reveal that the discharge efficiency of thruster with solid inner pole is higher, while operation conditions of high voltage and intense magnetic field are beneficial for reducing sputtering degree for thruster with hollow inner pole. For the design of long-lifetime and high-power Hall thruster, hollow cathode structure and a proper ratio of E/B should be taken into consideration.

Key words: Anode layer hall thruster, Ion sputtering, Numerical simulation

摘要：

通过对空心和实心内磁极的圆柱形阳极层霍尔推进器放电等离子体进行三维PIC 放电-溅射模拟，分析了放电功率和阳极附近磁场等对磁极离子溅射的影响。结果表明，实心内磁极的推进器效率较高，在较高电压和高磁场的工况下，空心内磁极圆柱形阳极层霍尔推进器的刻蚀程度有明显减弱。在大功率圆柱形阳极层霍尔推进器设计和研发工作中，应考虑空心阴极效应的优点以及合适的电磁场配比。

关键词: 阳极层霍尔推进器, 离子溅射, 数值模拟

CLC Number:

V439

LI Ping-chuan, TANG De-li, ZHAO Jie, ZHANG Fan. Numerical simulation of magnetic pole sputtering of a cylindrical anode layer hall thruster[J]. NUCLEAR FUSION AND PLASMA PHYSICS, 2019, 39(2): 181-187.

李平川，唐德礼*，赵杰，张帆. 圆柱形阳极层霍尔推进器磁极溅射数值模拟[J]. 核聚变与等离子体物理, 2019, 39(2): 181-187.

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