磁镜对霍尔推力器近壁电导率径向分布不对称性的影响

IF 1.6 3区物理与天体物理 Q3 PHYSICS, FLUIDS & PLASMAS

Plasma Science & Technology Pub Date : 2009-06-01 DOI:10.1088/1009-0630/11/3/13

Y. Daren, Liu Hui, Fu Haiyang

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引用次数: 5

摘要

结合霍尔推力器的实际磁场结构，研究了磁镜对近壁电导率径向分布的影响。用测试粒子法描述了等离子体电子动力学过程。采用蒙特卡罗格式对该模型进行求解。得到了电子迁移率的径向分布，并从理论上和数值上分析了磁镜在NWC中的作用。数值结果表明，NWC引起的电子迁移峰与磁镜比成反比，考虑磁镜时，电子沿径向迁移的不对称性增大。这一效应表明，除了磁场强度的差异外，内外壁附近磁镜比的差异实际上会增加霍尔推进器NWC径向轮廓的不对称性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Effect of Magnetic Mirror on the Asymmetry of the Radial Profile of Near-Wall Conductivity in Hall Thrusters

Considering the actual magnetic field configuration in a Hall thruster, the effect of magnetic mirror on the radial profile of near-wall conductivity (NWC) is studied in this paper. The plasma electron dynamic process is described by the test particle method. The Monte Carlo scheme is used to solve this model. The radial profile of electron mobility is obtained and the role of magnetic mirror in NWC is analysed both theoretically and numerically. The numerical results show that the electron mobility peak due to NWC is inversely proportional to the magnetic mirror ratio and the asymmetry of electron mobility along the radial direction gets greater when the magnetic mirror is considered. This effect indicates that apart from the disparity in the magnetic field strength, the difference in the magnetic mirror ratio near the inner and outer walls would actually augment the asymmetry of the radial profile of NWC in Hall thrusters.

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来源期刊

Plasma Science & Technology 物理-物理：流体与等离子体

CiteScore

3.10

自引率

11.80%

发文量

3773

审稿时长

3.8 months

期刊介绍： PST assists in advancing plasma science and technology by reporting important, novel, helpful and thought-provoking progress in this strongly multidisciplinary and interdisciplinary field, in a timely manner. A Publication of the Institute of Plasma Physics, Chinese Academy of Sciences and the Chinese Society of Theoretical and Applied Mechanics.