Fig 3 When the Utcp1= 1kV, trigger current
influenced by the Utcp2 (0.3kV, 0.5kV, 1kV)
PRF influenced by main-trigger voltage Utcp1:When the gas pressure is fixed at 50Pa and the anode voltage
Ea=10kV, the variation diagram of the repetition
frequency with the Utcp1 (0-5kV) is obtained at
different Utcp2 (0.5kV, 1kV, 1.5kV), as shown in Figure
4.