(a) structure
(b) picture of products
Fig 1 Glow discharge - double pulse triggering pseudospark switch: (a) structure; (b) picture of products
PRF influenced by pre-trigger voltage Utcp2:Based on the anode voltage Ea=10kV, the influence of the pre-trigger voltage Utcp2 on the PRF is obtained, as shown in Figure 2.
As shown in Figure 2(a), when the main trigger voltage is low Utcp1=0.3kV, increasing the Utcp2 can significantly improve the pulse repetition frequency characteristics. The application of the Utcp2 corresponds to the process of initial electron generation. The larger the trigger voltage, the stronger the spatial electric field, the faster the electron migration rate, the more intense the collision ionization, while the faster the hollow cathode effect is generated. When the main trigger voltage is higher Utcp1=1kV, as shown in Figure 2(b), increasing the Utcp2 at this time has almost no impact on the PRF performance.