Behaviour of Ion Acoustic Soliton in a two-electron temperature plasmas of Multi-pole line cusp Plasma Device (MPD)

TL;DR

This study experimentally investigates ion acoustic solitons in a multi-pole line cusp plasma device, demonstrating how varying two-electron-temperature populations affects soliton properties like amplitude and width.

Contribution

It provides new experimental insights into how two-electron-temperature components influence ion acoustic soliton behavior in a controlled plasma environment.

Findings

Soliton amplitude inversely correlates with effective electron temperature.

Varying pole-cusp magnetic field alters two-electron-temperature proportions.

Counter-propagating solitons interact as expected, confirming soliton nature.

Abstract

This article presents the experimental observations and characterization of Ion Acoustic Soliton (IAS) in a unique Multi-pole line cusp Plasma Device (MPD) device in which the magnitude of the pole-cusp magnetic field can be varied. And by varying the magnitude of the pole-cusp magnetic field, the proportions of two-electron-temperature components in the filament-produced plasmas of MPD can be varied. The solitons are experimentally characterized by measuring their amplitude-width relation and Mach numbers. The nature of the solitons is further established by making two counter-propagating solitons interact with each other. Later, the effect of the two-temperature electron population on soliton amplitude and width is studied by varying the magnitude of the pole cusp-magnetic field. It has been observed that different proportions of two-electron-temperature significantly influence the propagation of IAS. The amplitude of the soliton has been found to be following inversely with the effective electron temperature (Teff)