Multipactor Discharges in a One-sided Dielectric-Loaded Parallel-Plate Waveguide

The significance of this paper is to study the time evolution of multipactor in parallel plate waveguides with a single dielectric-loaded. The Monte Carlo algorithm is used to track the electronic trajectory in real-time. The phenomena of the multipactor effect including the influence of space charge and the existence of an electrostatic field are studied. The evolution of the multipactor effect in the presence of the electrostatic, and space charge fields simultaneously and separately is considered. Taking into account the case of a truncated parallel plate waveguide, a double-sided multipactor (DSMP) sensitivity curve containing saturation states is fitted. As the number of particles increases, multipactor will be inhibited by the growth of electrostatic field ($E_{d c}$). Subsequently, due to the repulsive effect of space charge field ($E_{s c}$), particles will go through double-sided motion in a saturated phase and experience a low impact energy collision with the dielectric surface, resulting in a slow decrease in $E_{d c}$.