阳极介质涂层对霍尔推力器工作的影响
Effect of Anode Dielectric Coating on Hall Thruster Operation
摘要：
在霍尔推力器的近阳极区域中观察到的一个有趣的现象是，在去除霍尔推力器操作的正常过程期间在阳极表面上产生的电介质涂层后，阳极下降从正变为负。阳极跌落可能会影响推力器的寿命和加速效率。阳极涂层上的阳极下降的效果进行了实验研究，使用偏置和发射探头。放电电流振荡的测量表明，推力器的操作是更稳定的涂层阳极。
英文摘要：
An interesting phenomenon observed in the near-anode region of a Hall thruster is that the anode fall changes from positive to negative upon removal of the dielectric coating, which is produced on the anode surface during the normal course of Hall thruster operation. The anode fall might affect the thruster lifetime and acceleration efficiency. The effect of the anode coating on the anode fall is studied experimentally using both biased and emissive probes. Measurements of discharge current oscillations indicate that thruster operation is more stable with the coated anode.
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