Bremsstrahlung Emission from Ion-Dust Grain Coulomb Scattering in Dusty Plasmas

Abstract

Bremsstrahlung processes in ion–dust grain Coulomb scatterings in dusty plasmas are investigated using the classical trajectory method. Attractive interaction between the projectile ion and its own image charge inside the positively charged dust grain is included to obtain the total interaction potential between the projectile ion and the dust grain. The classical straight-line trajectory method is applied to represent the differential radiation cross section as a function of the scaled impact parameter, projectile energy, and photon energy. The result shows that the induced image charge enlarges the bremsstrahung cross section near the dust surface.