A review on the Vortex and Coherent Structures in Dusty Plasma Medium

TL;DR

This review summarizes theoretical, experimental, and computational research on vortical and coherent structures in dusty plasma, highlighting their formation mechanisms, evolution, and relation to turbulence in both magnetized and unmagnetized conditions.

Contribution

It provides a comprehensive overview of past studies on vortical structures in dusty plasma, emphasizing mechanisms and dynamics not extensively covered before.

Findings

Vortical structures can form through various instabilities and external forcing.

The evolution of vortices is closely linked to turbulence in dusty plasma.

Both magnetized and unmagnetized dusty plasmas exhibit diverse coherent structures.

Abstract

Dusty plasma is an admixture of electrons, ions, and massive charged solid particles of sub-micron to micron-sized in the background of neutral gas. The dust grain medium exhibits fluid (liquid) as well as solid-like characteristics at different background plasma conditions. It supports various linear and non-linear dynamical structures because of the external perturbation and internal instabilities. The vortical or coherent structure in the dusty plasma medium is a kind of self-sustained dynamical structure that is formed either by instabilities or external forcing. In this review article, the author discusses the past theoretical, experimental, and computational investigations on vortical and coherent structures in unmagnetized as well as in magnetized dusty plasma. The possible mechanisms to form vortices in dust grain medium are discussed in detail. The studies on the evolution of vortices and their correlation with turbulence are also reviewed.