A PIC-MCC modeling of sheath recovery processes after current zero

A sheath recovery process dominants the initial stage of a dielectric recovery process after interrupting a vacuum arc current. The objective of this paper is to model a post-arc sheath recovery process by using PIC-MCC method. Second electrons, external circuit, and fundamental collisions between particles were taken into considerate in the model. The result shows that the amplitude of post-arc current have a proportional relationship with initial density of plasma. The sheath recovery time turned slowing down after a quick increase with the increase of initial plasma density.