Radiation-condensation instability in a four-fluid dusty plasma

TL;DR

This paper analyzes the linear stability of a four-fluid dusty plasma under radiation-condensation instability, revealing that negatively charged dust particles broaden the conditions for instability compared to single-fluid models.

Contribution

It introduces a detailed four-fluid model including dust charge effects and examines their influence on radiation-condensation instability.

Findings

Negatively charged dust particles enhance the RC instability.

The instability conditions are broader in the four-fluid model.

Dust charge effects are significant in plasma stability analysis.

Abstract

In this work linear stability analysis of a four-fluid optically thin plasma consisting of electrons, ions, neutral atoms, and charged dust particles is performed with respect to the radiation-condensation (RC) instability. The energy budget of the plasma involves the input from heating through photo-electron emission by dust particles under external ultraviolet radiation as well as radiative losses in inelastic electron-neutral, electron-ion, neutral-neutral collisions. It is shown that negatively charged particles stimulate the RC instability in the sense that the conditions for the instability to hold are wider than similar conditions in a single-fluid description.