A four-electrode plasma based triggered spark gap switch is designed for pulsed power applications, which consists of an anode and cathode of a main spark gap switch and an anode and cathode for a trigger pin. The anode and cathode of the trigger pin are coaxially arranged, and the gap between electrodes is 25 μm. A trigger voltage of 200 V is applied across the trigger gap with the help of a switching insulated gate bipolar transistor. With the breakdown of the trigger gap, plasma is generated, which is injected into the main gap. The trigger pin is placed axisymmetric to the main spark gap in the cathode. The main discharge channel of the spark gap has 0.6 mm space between two electrodes, which is charged to 1000 V. When the spark gap is triggered, the discharge current has a peak value of 6.1 kA with a quarter cycle time period of 0.97 µs. The four-electrode spark gap switch results are compared with those of a three-electrode trigatron switch, which has the peak current of 6 kA with 1.01 µs as quarter-cycle time period. Four similar four-electrode spark gap switches are triggered with the same scheme and synchronized within 10 ns as peak values of currents with jitter as less than 5 ns.

中文翻译：

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用于多个开关同步的等离子触发火花隙开关

基于四电极等离子体的触发式火花隙开关设计用于脉冲功率应用，它由主火花隙开关的阳极和阴极以及触发销的阳极和阴极组成。触发销的正负极同轴排列，电极间距为25 μm。在开关绝缘栅双极晶体管的帮助下，在触发间隙上施加 200 V 的触发电压。随着触发间隙的击穿，产生等离子体，该等离子体被注入到主间隙中。触发销与阴极中的主火花隙轴对称放置。火花隙的主放电通道在两个电极之间有 0.6 mm 的空间，充电到 1000 V。触发火花隙时，放电电流峰值为 6.1 kA，四分之一周期时间为 0.97 µs。四电极火花隙开关的结果与三电极触发开关的结果进行比较，三电极触发开关的峰值电流为 6 kA，四分之一周期时间为 1.01 µs。四个类似的四电极火花隙开关以相同的方案触发，并在 10 ns 内同步为抖动小于 5 ns 的电流峰值。