Fig. 1. Structure diagram of grooved self-triggered switch and preionization self-triggered switch

Fig. 2. Electric field distribution diagram of two switches

Fig. 3. Equivalent circuit and simulation waveforms of the preionization self-triggered switch

Fig. 4. Schematic diagram of experimental platform (1: 6-stage Marx generator, 2: wave regulating inductance, 3: self breaking gas switch, 4: resistance voltage divider, 5: spacing basin insulator, 6: experimental chamber)

Fig. 5. Marx equivalent circuit and switching voltage simulation waveforms

Fig. 6. Typical time-domain waveforms of switch breakdown

Fig. 7. Breakdown delay and voltage of the cathode grooved switch at 40 ns, 70 ns and 120 ns rise time

Fig. 8. Breakdown delay and voltage of the preionization switch at 40 ns, 70 ns and 120 ns rise time

Fig. 9. Comparison of three kinds of switch jitter at the rise time of 70ns and 120ns