Effect of Charge Fluctuations on the Debye Shielding and Energy Loss ofN×MProjectiles in a Dusty Plasma

Abstract

The electrostatic potential and the energy loss by N × M projectiles propagating through a dusty plasma are derived within the frame work of dielectric theory for different dust parameters of interest. An interference contribution of these projectiles to the potential and energy loss is observed which depends upon the separation between them and their orientation. The dynamic dust charge produces a potential well instead of a coulombic type potential for a slowly moving test charge having small charge relaxation rate and energy is gained by the charged projectiles. However, fast charge relaxation enhances the energy loss and some peaks are also observed showing the excitation of some electrostatic modes. These results are useful to explain the coagulation of dust grains in laboratory and space plasma as well as in the field ion-beam driven ICF scheme.

Energy loss of charged projectiles in a self-gravitating Lorentzian dusty plasma

“…17 Later, the shielded potential and energy loss of N 2 projectiles propagating through a multicomponent dusty plasma in the form an inclined row with fixed dust-charge state was studied. 19 In our previous work, we have used the linearized dielectric approach, in which the equilibrium dust-distribution function was assumed to be a local Maxwellian. 19 In our previous work, we have used the linearized dielectric approach, in which the equilibrium dust-distribution function was assumed to be a local Maxwellian.…”