Screened Occurrence Scattering Time for Electron-Dust Grain Collisions in Dusty Plasmas

Abstract

Plasma screening effects on occurrence time for electron-dust grain scattering in dusty plasmas are investigated using the eikonal method. The semiclassical path and the semiclassical wave function are applied to obtain the eikonal phase and amplitude. The interaction potential is obtained by using the image-charge method. The scaled semiclassical occurrence time is obtained as a function of the impact parameter, dust radius, scattering angle, and scattering energy. It has been found that the occurrence time delay is slightly increased as the scaled Debye length is increased for small scattering angles. However, the occurrence scattering time is increased sinusoidally with the increasing scattering angle.