Like the hollow cathode, discharge instability also occurs during the operation of a plasma contactor. Voltage and current probes were employed to test the change of keeper voltage, keeper current, anode voltage, and anode current parameters with time under different working conditions. The anode current range corresponding to the discharge instability phenomenon is about 0.4 A to 1.2 A, and the emission characteristic curve in this area appears to bulge wherein the four parameters all produce different degrees of oscillation, the anode current oscillation being the greatest. Its waveform is considered to consist of a small-amplitude, high-frequency triangular wave and a large-amplitude, low-frequency sawtooth wave, and we have explained the shape of the wave. Each parameter shows hundreds of Hz in oscillation frequency and the phases of the four parameters appear to be regular. After fast Fourier transform processing, the frequency and amplitude of the main peak of the anode cu...

中文翻译：

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等离子体接触器中的放电不稳定性

像空心阴极一样，在等离子体接触器工作期间也会发生放电不稳定性。使用电压和电流探针测试在不同工作条件下，保持器电压，保持器电流，阳极电压和阳极电流参数随时间的变化。对应于放电不稳定性现象的阳极电流范围约为0.4 A至1.2 A，该区域的发射特性曲线似乎凸出，其中四个参数均产生不同程度的振荡，阳极电流振荡最大。它的波形被认为是由一个小振幅高频三角波和一个大振幅低频锯齿波组成的，我们已经解释了该波的形状。每个参数都显示数百Hz的振荡频率，并且四个参数的相位看起来很规则。经过快速傅立叶变换处理后，阳极电流主峰的频率和幅度...