Study on resonance process of dust plasma

Based on the kinetic theory, the dispersion relation of dust plasma is presented. Without the high/low frequency approximation, the formulas of resonance frequency and growth rate are given, and the effects of dust mass, density and carrier frequency on resonance process are discussed. The basic physical laws of dust plasma resonance process are obtained. The influence of high velocity dust particles on resonance process for the typical rocket plume is analyzed. The simulation results show that the resonance process can be excited with a dust velocity of 1 km/s, and the resonance frequency is 3 kHz. The mechanisms of dust plasma resonance and the effect of high velocity dust are of great significance for understanding the physical process of dust plasma and abnormal decay of rocket plume.