Electron-acoustic plasma waves: Oblique modulation and envelope solitons

Yannis Kourakis, P K Shukla

Research output: Contribution to journalArticlepeer-review

72 Citations (Scopus)


Theoretical and numerical studies are presented of the amplitude modulation of electron-acoustic waves (EAWs) propagating in space plasmas whose constituents are inertial cold electrons, Boltzmann distributed hot electrons, and stationary ions. Perturbations oblique to the carrier EAW propagation direction have been considered. The stability analysis, based on a nonlinear Schrodinger equation, reveals that the EAW may become unstable; the stability criteria depend on the angle theta between the modulation and propagation directions. Different types of localized EA excitations are shown to exist.
Original languageEnglish
Article number036411
Pages (from-to)036411-1-036411-7
JournalPhysical Review E
Issue number3 2
Publication statusPublished - Mar 2004

ASJC Scopus subject areas

  • Mathematical Physics
  • Physics and Astronomy(all)
  • Condensed Matter Physics
  • Statistical and Nonlinear Physics


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