THE MOTION OF CHARGED PARTICLES IN THE CENTRAL FIELD OF PO-LARIZED DUST PARTICLE

Abstract

In this work the motion of an ion around the dust particle and the motion of dust particle on dust particle on the basis of screened interaction potentials that take into account the effect of polarization of dust particles are investigated. Scattering angles of charged particles around polarized dust particle and their trajectories are obtained. It was found that the polarization of dust particles can lead to a decrease in the cross section of an inelastic collision between dust particles.  It is shown that for strong interactions the effect of the polarization effect is small, it arises only for weak interactions. In this connection, the effect of the polarization of dust particle on the motion of an ion around of dust particle affects insignificantly. In the case of weak interactions of dust particles, a speculative impact parameter appears, at which the incident dust particle is scattered to a small angle close to zero. The latter appears only at relatively high energies  of the incident dust particle.

Keywords: dusty plasma, screened interaction potentials, polarization, cross section.