• PROPERTIES OF DUST ACOUSTIC SOLITARY WAVES IN PLASMA WITH NON-THERMAL ELECTRONS

Abstract

A Plasma model is considered, having contaminated with negatively charged dust particles to study the properties of the nonlinear wave profile, in which the ions are the Maxwellian and electrons are non Maxwellian. Inertial dust motion is possible due to their heavy mass in comparison to the much smaller masses of ions and electrons. The occurrence of the nonlinear waves leading to formation and propagation of dust acoustic solitary waves (DASW) in the plasma is augmented through energy integral. A pseudo potential approach is employed to derive this integral known as the Sagdeev Potential (S.P) equation. The important parameters for our study are considered as  signifying respectively the number of charged dust particle, equilibrium density ratio of dust and ion, population of non thermal electron and wave Mach number. The nature of soliton is also studied by deriving well-known small amplitude K-dV solution of the S.P equation.