Non‐local electron kinetics around the cloud of dust particles

Abstract

Mutual influence of dust particles and gas discharge plasma was investigated with the help of self-consistent non-local kinetic model. Calculations were performed for fixed step-like radial distributions of the dust particles density, and for self-consistent distribution calculated by the drift-diffusion equation. The results show, that the production of electrons and ion occurs mainly outside the dust cloud. In the case of self-consistent dust particles density distribution, inside the dust cloud the ionization rate is equal to the rate of electron and ion recombination on the dust particles, the radial components of electron and ion fluxes are almost equal to zero, and the radial electric field is expelled from the dust cloud. Presented results can be important for description of the plasma confinement of the dust particles clouds. KEYWORDS dusty plasma, electron energy distribution function, non-local electron kinetics 1