Ion-acoustic solitons in multispecies spatially inhomogeneous plasmas

Tarsem Singh Gill, Harvinder Kaur, Nareshpal Singh Saini

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Ion-acoustic solitons are investigated in the spatially inhomogeneous plasma having electrons-positrons and ions. The soliton characteristics are described by Korteweg-de Vries equation which has an additional term. The density and temperature of different species play an important role for the amplitude and width of the solitons. Numerical calculations show only the possibility of compressive solitons. Further, analytical results predict that the peak amplitude of soliton decreases with the decrease of density gradient. Soliton characteristics like peak amplitude and width are substantially different from those based on KdV theory for homogeneous plasmas.

Original languageEnglish
Pages (from-to)1049-1056
Number of pages8
JournalPramana - Journal of Physics
Volume66
Issue number6
DOIs
StatePublished - 2006
Externally publishedYes

Keywords

  • Compressive
  • Electron-positron
  • Ion-acoustic solitons
  • Multispecies

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