Potential distribution around the charged particle in the collisional weakly ionized plasma in an external electric field

Abstract

A point-like absorbing charged particle in the uniform anisotropic plasma with an external uniform static electric field is under consideration. The ion and electron motion is described in the drift-diffusion approach with a variable mobility. Small perturbations for plasma parameters are considered. The asymptotic expression for electric potential perturbation at large distances is derived and discussed. The analytical approximation for potential distribution around particle is proposed.