Finite amplitude envelope solitons in pair-ion plasmas

W.M. Moslem, Ioannis Kourakis, P.K. Shukla

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


The nonlinear coupling between finite amplitude ion thermal waves (ITWs) and quasistationary density perturbations in a pair-ion plasma is considered. A generalized nonlinear Schrödinger equation is derived for the ITW electric field envelope, accounting for large amplitude quasistationary plasma slow motion describing the ITW ponderomotive force. The present theory accounts for the trapping of ITWs in a large amplitude ion density hole. The small amplitude limit is considered and exact analytical solutions are obtained. Finite amplitude solutions are obtained numerically and their characteristics are discussed.
Original languageEnglish
Article number032107
Pages (from-to)032107/1-6
Number of pages6
JournalPhysics of Plasmas
Issue number3
Publication statusPublished - 2007

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics


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