Nonlinear Lagrangian theory of envelope electrostatic plasma waves in a two-electron-temperature plasma

Yannis Kourakis, P K Shukla

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

An analytical model based on Lagrangian variables is presented for the description of ion-acoustic waves propagating in an unmagnetized, collisionless, three-component plasma composed of inertial positive ions and two thermalized electron populations, characterized by different temperatures. The wave's amplitude is shown to be modulationally unstable. Different types of localized envelope electrostatic excitations are shown to exist, and their forms are analytically and numerically investigated in terms of the plasma dispersion and nonlinearity laws. These results are in qualitative agreement with satellite observations in the magnetosphere. (C) 2004 American Institute of Physics.
Original languageEnglish
Pages (from-to)4506-4514
Number of pages9
JournalPhysics of Plasmas
Volume11
Issue number9
DOIs
Publication statusPublished - Sep 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics

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