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首页> 外文期刊>Journal of Applied Physics >Discharge mode transition in a Krypton-fed 1 A-class LaB_6 cathode for low-power Hall thrusters for small satellites
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Discharge mode transition in a Krypton-fed 1 A-class LaB_6 cathode for low-power Hall thrusters for small satellites

机译：用于小卫星的低功耗霍尔推进器的Krypton-Fed 1 A-Class Lab_6阴极中的放电模式过渡

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摘要

Thermionic cathodes are essential for the operation of various electrostatic propulsion devices. They strongly influence the performance and lifetime of the propulsion system. In this study, a 1 A-class LaB_6 laboratory model hollow cathode has been tested with krypton in diode and triode configurations in order to assess the cathode discharge mode transition behavior. Measurements have been performed over a range of krypton mass flow rates (0.1, 0.15, and 0.21 mg/s, or 1.6, 2.4, and 3.4 sccm), keeper (0.1, 0.15, and 0.2 A), and anode currents (0.1-1 A) at a fixed cathode-to-anode distance. Seven criteria were used to distinguish between the spot and plume mode operations. The results show that the mode transition in low-current cathodes may be a nonlinear phenomenon, and only some of the existing mode transition criteria can be used to accurately predict the spot/plume discharge regions at low emission currents.
机译：热离子阴极对于各种静电推进装置的操作至关重要。它们强烈影响推进系统的性能和寿命。在该研究中，通过二极管和三极管配置中的氪和三极管配置测试了1 A类Lab_6实验室模型中空阴极，以便评估阴极放电模式过渡行为。在一系列氪气质量流速（0.1,0.15和0.21mg / s，或1.6,2.4和3.4 sccm），保持器（0.1,0.15和0.2a）和阳极电流（0.1- 1 a）在固定的阴极到阳极距离处。七个标准用于区分现场和羽流模式操作。结果表明，低电流阴极中的模式过渡可以是非线性现象，并且只能使用一些现有模式转换标准在低发射电流下精确地预测点/羽流放电区域。

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  • 来源
    《Journal of Applied Physics》 |2020年第6期|064501.1-064501.10|共10页
  • 作者

    G.-C. Potrivitu; L Xu; S. Huang; M. W. A. B. Rohaizat; S. Xu;

  • 作者单位

    Plasma Sources and Applications Centre/Space Propulsion Centre National Institute of Education Nanyang Technological University Singapore 637616;

    Plasma Sources and Applications Centre/Space Propulsion Centre National Institute of Education Nanyang Technological University Singapore 637616 Center for Space Propulsion and Gravitational Universe (SPaGU) Hang Zhou Institute for Advanced Studies University of Chinese Academy of Sciences Hang Zhou 310024 China;

    Plasma Sources and Applications Centre/Space Propulsion Centre National Institute of Education Nanyang Technological University Singapore 637616;

    Plasma Sources and Applications Centre/Space Propulsion Centre National Institute of Education Nanyang Technological University Singapore 637616;

    Plasma Sources and Applications Centre/Space Propulsion Centre National Institute of Education Nanyang Technological University Singapore 637616;

  • 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);
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