Dust-acoustic envelope solitons in an electron depleted plasma

Abstract

A theoretical investigation of the modulational instability (MI) of dust-acoustic waves (DAWs) by deriving a nonlinear Schrödinger equation in an electron depleted opposite polarity dusty plasma system containing non-extensive positive ions has been presented. The conditions for MI of DAWs and formation of envelope solitons have been investigated. The sub-extensivity and super-extensivity of positive ions are seen to change the stable and unstable parametric regimes of DAWs. The addition of dust grains causes to change the width of both bright and dark envelope solitons. The findings of this study may be helpful to understand the nonlinear features of DAWs in Martian atmosphere, cometary tail, solar system, and in laboratory experiments, etc.

arXiv comment6 pages, 8 figures

References in corpus (5)

• Modulation of ion-acoustic waves in a nonextensive plasma with two-temperature electrons
• Modulated dust-acoustic wave packets in an opposite polarity dusty plasma system
• Dust-ion-acoustic rogue waves in presence of non-extensive non-thermal electrons
• Generation of rogue waves in space dusty plasmas
• Dust-acoustic rogue waves in non-thermal plasmas

Cited by in corpus (1)

• Modulational instability of a Yukawa fluid excitation under the Quasi-localization charged approximation (QLCA) framework