Drift wave turbulence in the presence of a dust density gradient

TL;DR

This paper investigates how dust density gradients influence drift wave turbulence in a collisional plasma, deriving new nonlinear equations and analyzing their effects through numerical simulations.

Contribution

It introduces a novel set of nonlinear equations capturing dust effects on drift wave turbulence and explores their impact numerically.

Findings

Dust density gradients modify drift wave instability growth.

Dust presence affects turbulence characteristics and energy transfer.

Numerical results show altered turbulence spectra due to dust.

Abstract

We present turbulent properties of electrostatic drift waves in a nonuniform collisional plasma composed of magnetised electrons and ions in the presence of immobile dust particles. For this purpose, we derive a pair of nonlinear quasi-two-dimensional equations exhibiting the coupling between the generalized ion vorticity and density fluctuations associated with collisional drift waves. The effect of a dust density gradient on the initial drift instability and fully developed turbulence is examined numerically.