Analysis and simulation of pseudospark discharge

Pseudospark discharges are sources of intense electron beams. Reported in this paper are theoretical studies of the pseudospark discharges. We have developed a theoretical and computational model to study the initiation phase of pseudospark discharges via PIC-MCC method. From the numerical results,we have identified a sequence of physical events. In spite of the approximation in this model, the picture which has emerged provides insight into the virtual anode moving which were observed by previous experiments.