Dynamics of compressional Mach cones in a strongly coupled complex plasma

Abstract

Using a Generalised-Hydrodynamic (GH) fluid model we study the influence of strong coupling induced modification of the fluid compressibility on the dynamics of compressional Mach cones in a dusty plasma medium. A significant structural change of lateral wakes for a given Mach number and Epstein drag force is found in the strongly coupled regime. With the increase of fluid compressibility, the peak amplitude of the normalised perturbed dust density first increases and then decreases monotonically after reaching its maximum value. It is also noticed that the opening angle of the cone structure decreases with the increase of the compressibility of the medium and the arm of the Mach cone breaks up into small structures in the velocity vector profile when the coupling between the dust particles increases.

arXiv comment8 pages with 5 figures

References in corpus (5)

• Experimental observation of strong coupling effects on the dispersion of dust acoustic waves in a plasma
• Theoretical study of head-on collision of dust acoustic solitary waves in a strongly coupled complex plasma
• Driven transverse shear waves in a strongly coupled dusty plasma
• Instability of Shear Waves in an Inhomogeneous Strongly Coupled Dusty Plasma
• Effect of polarization force on the Mach cones in a complex plasma

Cited by in corpus (2)

• Interaction of a supersonic particle with a three-dimensional complex plasma
• Interaction and propagation characteristics of two counter and co-propagating Mach cones in a dusty plasma