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Modulating action of low frequency oscillations on high frequency instabilities in Hall thrusters

机译:低频振荡对霍尔推力器高频不稳定性的调制作用

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摘要

It is found that the low frequency oscillations have modulating action on high frequency instabilities in Hall thrusters. The physical mechanism of this modulation is discussed and verified by numerical simulations. Theoretical analyses indicate that the wide-range fluctuations of plasma density and electric field associated with the low frequency oscillations affect the electron drift velocity and anomalous electron transport across the magnetic field. The amplitude and frequency of high frequency oscillations are modulated by low frequency oscillations, which show the periodic variation in the time scale of low frequency oscillations.
机译:已经发现,低频振荡对霍尔推进器的高频不稳定性具有调节作用。讨论了这种调制的物理机制,并通过数值模拟对其进行了验证。理论分析表明,与低频振荡相关的等离子体密度和电场的宽范围波动会影响电子漂移速度和跨磁场的异常电子传输。高频振荡的幅度和频率由低频振荡调制,低频振荡的时标呈现出周期性变化。

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  • 来源
    《Journal of Applied Physics》 |2015年第5期|053301.1-053301.6|共6页
  • 作者单位

    Laboratory of Plasma Propulsion, Harbin Institute of Technology, P.O. Box 3047, Harbin 150001, People's Republic of China;

    Laboratory of Plasma Propulsion, Harbin Institute of Technology, P.O. Box 3047, Harbin 150001, People's Republic of China;

    Laboratory of Plasma Propulsion, Harbin Institute of Technology, P.O. Box 3047, Harbin 150001, People's Republic of China;

    Laboratory of Plasma Propulsion, Harbin Institute of Technology, P.O. Box 3047, Harbin 150001, People's Republic of China;

    Laboratory of Plasma Propulsion, Harbin Institute of Technology, P.O. Box 3047, Harbin 150001, People's Republic of China;

    Laboratory of Plasma Propulsion, Harbin Institute of Technology, P.O. Box 3047, Harbin 150001, People's Republic of China;

    Beijing Institute of Control Engineering, Beijing 100190, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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