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首页> 外文期刊>Journal of propulsion and power >Effect of Low-Frequency Oscillation on Plasma Focusing in Krypton Hall Thruster
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Effect of Low-Frequency Oscillation on Plasma Focusing in Krypton Hall Thruster

机译：低频振荡对K霍尔推力器中等离子体聚焦的影响

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摘要

In this work, a krypton Hall thruster is used to study the influence of low-frequency oscillation on the focusingcharacteristics of the plasma beam. The experiment results show that the plume divergence half-angle of the kryptonthruster is sensitive to the low-frequency oscillation. Through monitoring the ionization process inside the dischargechannel, it is found that the low-frequency oscillation leads to extending of the propellant ionization regiondownstream and, at the same time, the electron temperature is increased near the channel exit. As a result, thedeviation of space potential lines from the magnetic lines is enhanced. These are the dominant physical mechanisms toaffect the plasma beam focusing characteristics for the krypton Hall thruster.
机译：在这项工作中，使用Hall霍尔推进器来研究低频振荡对等离子束聚焦特性的影响。实验结果表明，th推进器的羽流发散半角对低频振荡敏感。通过监测放电通道内部的电离过程，发现低频振荡会导致推进剂电离区域向下游扩展，同时，电子温度在通道出口附近升高。结果，增强了空间电位线与磁力线的偏离。这些是影响Hall霍尔推进器的等离子束聚焦特性的主要物理机制。

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