Electrostatic shock structures in a magnetized plasma having non-thermal particles

TL;DR

This paper presents a theoretical study of nonlinear dust-ion-acoustic shock waves in a magnetized plasma with non-thermal particles, revealing how various plasma parameters influence shock structures.

Contribution

It derives a Burgers' equation for shock propagation in a complex plasma model including non-thermal electrons and positrons, highlighting new effects of plasma parameters on shock profiles.

Findings

Shock steepness decreases with ion viscosity.

Electron temperature increases shock amplitude.

Oblique angle and positron density affect shock height.

Abstract

A rigorous theoretical investigation has been made on the nonlinear propagation of dust-ion-acoustic shock waves in a multi-component magnetized pair-ion plasma having inertial warm positive and negative ions, inertialess non-thermal electrons and positrons, and static negatively charged massive dust grains. The Burgers' equation is derived by employing reductive perturbation method. The plasma model supports both positive and negative shock structures in the presence of static negatively charged massive dust grains. It is found that the steepness of both positive and negative shock profiles declines with the increase of ion kinematic viscosity without affecting the height, and the temperature of the electrons enhances the amplitude of the shock profile. It is also observed that the increase in oblique angle rises the height of the positive shock profile, and the height of the positive shock wave increases with the number density of positron. The application of the findings from present investigation are briefly discussed.