Statistical Prediction of Microwave Window Breakdown: Effects of RF Magnetic Field

This paper analyzes the effects of RF magnetic field on the initiation and temporal evolution of multipactor discharge on a dielectric exposed to a linearly polarized electromagnetic wave. It is revealed that the RF magnetic field changes considerably the electron dynamics in the range of small dc fields: It leads to a widening of the susceptibility region and gives the dominant contribution to the total buildup time of the discharge. The nonlinear integral equation for obtaining the saturation level for the given material and velocity spread is formulated.