In a pulsed vacuum discharge, the ejection performance of a metal plasma jet can be effectively improved by preventing charged particles from moving to the anode. In this paper, the effects of resistance and capacitance on the anode side on the discharge characteristics and the generation characteristics of plasma jet are investigated. Results show that the existence of a resistor on the anode side can increase the anode potential, thereby preventing charged particles from entering the anode and promoting the ejection of charged particles along the axis of the insulating sleeve nozzle. The application of a capacitor on the anode side can not only absorb electrons at the initial stage of discharge, increasing the peak value of the cathode hump potential, but also prevent charged particles from moving to the anode, thereby improving the ejection performance of the plasma jet. In addition, the use of a larger resistance and a smaller capacitance can improve the blocking effect on charged particles and further improve the ejection performance of the plasma jet. Results of this study will provide a reference for the improvement of the ejection performance of plasma jets and their applications.

在脉冲真空放电中，通过阻止带电粒子向阳极移动，可以有效提高金属等离子体射流的喷射性能。本文研究了阳极侧电阻和电容对放电特性和等离子体射流产生特性的影响。结果表明，阳极侧电阻的存在可以提高阳极电位，从而阻止带电粒子进入阳极，促进带电粒子沿绝缘套管喷嘴的轴线喷射。在阳极侧应用电容器，不仅可以在放电初期吸收电子，提高阴极驼峰电位的峰值，还可以防止带电粒子向阳极移动，从而提高等离子体射流的喷射性能。此外，采用较大的电阻和较小的电容可以提高对带电粒子的阻挡效果，进一步提高等离子体射流的喷射性能。本研究结果将为等离子射流喷射性能的提高及其应用提供参考。