In order to increase the production of plasma jets in a pulse vacuum discharge, based on the insulated anode electrode structure (IAES), discharge experiments by using multiple electrodes under one power supply are performed in this paper. During experiments, discharge currents flowing through multiple cathode sides (cathode currents) were measured by identical Rogowski coils at the same time. The plasma density and propagation velocity of plasma jets were measured by the self-designed ‘+’ type probes. Firstly, the differences in discharge characteristics and generation characteristics of plasma jets between the single-electrode and the double-electrode discharge were compared and analyzed. Secondly, the effects that the electrode spacing (D) and the capacitor capacity had on the discharge characteristics and generation characteristics of plasma jets of the multi-electrode were analyzed. Results show that because the discharge voltage of the IAES is dropped to the arc voltage after a long duration, the simultaneous discharge of multiple electrodes in a single pulse can be realized. Compared with the single-electrode discharge, using multiple electrodes to discharge simultaneously in a single pulse can decrease the initial discharge voltage, increase the peak of cathode current and increase the amount of plasma production. In addition, there is interaction between plasma jets of the multi-electrode, and the spatial electric field generated by the first ejected plasma jet will hinder the generation of plasma jets of subsequent electrodes. Only by keeping a certain electrode spacing (D) between the electrodes, can multiple electrodes be all discharged and plasma jets of the same length be produced. Increasing capacitor capacity can increase the plasma density, propagation velocity, length of plasma jets of the multi-electrode, and realize the simultaneous discharge of more electrodes in a single pulse.

为了增加脉冲真空放电中等离子体射流的产生，基于绝缘阳极结构（IAES），本文通过在一个电源下使用多个电极进行放电实验。在实验过程中，流经多个阴极侧的放电电流（阴极电流）由相同的Rogowski线圈同时测量。血浆射流的血浆密度和传播速度通过自行设计的“ +”型探针进行测量。首先，比较和分析了单电极和双电极放电之间的等离子体射流的放电特性和产生特性的差异。其次，影响电极间距（D）和电容器容量对多电极等离子流的放电特性和产生特性进行了分析。结果表明，由于长时间后IAES的放电电压下降到电弧电压，因此可以在单个脉冲中实现多个电极的同时放电。与单电极放电相比，使用多个电极在单个脉冲中同时放电可以降低初始放电电压，增加阴极电流的峰值并增加等离子体产生量。另外，多电极的等离子体射流之间存在相互作用，并且由第一喷射的等离子体射流产生的空间电场将阻碍后续电极的等离子体射流的产生。仅通过保持一定的电极间距（D）在电极之间，多个电极可以全部放电并且产生相同长度的等离子流吗？电容器容量的增加可以增加多电极的等离子体密度，传播速度和等离子体射流的长度，并可以在单个脉冲中同时放电更多电极。