Effect of superthermality on nonlinear electrostatic modes in plasmas

TL;DR

This paper studies how superthermal electrons influence the behavior of nonlinear electrostatic solitary waves and modulational instability in plasmas with kappa-distributed electrons.

Contribution

It explores the effects of superthermality on electron-acoustic solitary structures and modulational instability, revealing new types of localized plasma waves.

Findings

Existence of various localized structures in superthermal plasmas

Superthermality affects the stability of electrostatic waves

Modulational instability conditions are characterized

Abstract

The nonlinear propagation of electron-acoustic solitary structures is investigated in a plasma containing kappa-distributed (superthermal) electrons. Different types of localized structures are shown to exist. The occurrence of modulational instability is investigated.