Ion acoustic solitons in a nonextensive plasma with multi-temperature electrons

N. S. Saini, Shalini

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40 Scopus citations

Abstract

The properties of propagation of small amplitude ion acoustic solitary waves (IASWs) are studied in a plasma containing cold fluid ions and multi-temperature electrons (cool and hot electrons) with nonextensive distribution. Korteweg-de Vries (KdV) equation with finite amplitude is derived using a reductive perturbation method. From the solitary solutions of KdV equation, the combined effects of nonextensivity and density ratio are studied on characteristics of ion acoustic (IA) solitary waves. Positive as well as negative polarity solitons exist. Since singularity exists for A=0 so we have also derived modified Korteweg de Vries (mKdV) equation to study the solitonic solution for critical values of physical parameters (q,f,σ). The nonextensivity of electrons (via q) and density ratio of electrons and ions (via f) and temperature ratio (σ) significantly influence the characteristics of ion acoustic solitary structures.

Original languageEnglish
Pages (from-to)155-163
Number of pages9
JournalAstrophysics and Space Science
Volume346
Issue number1
DOIs
StatePublished - Jul 2013
Externally publishedYes

Funding

Acknowledgement Shalini is grateful to University Grants Commission, New Delhi for Rajiv-Gandhi Fellowship award. The work by N.S.S. was supported by University Grants Commission, New Delhi, India under the major research project F. No. 41-873/2012(SR).

FundersFunder number
University Grants Commission41-873/2012

    Keywords

    • Ion acoustic
    • Non-Maxwellian
    • Nonextensivity
    • Solitons
    • Two temperature electrons
    • mKdV

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