• Effect of nonthermal ion distribution and dust temperature on nonlinear dust acoustic solitary waves

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    • Keywords


      Solitons; dust acoustic wave; Sagdeev potential; dusty plasma; nonthermal ion

    • Abstract


      The effects of nonthermal ion distribution and finite dust temperature are incorporated in the investigation of nonlinear dust acoustic waves in an unmagnetized dusty plasma. Sagdeev pseudopotential method which takes into account the full nonlinearity of plasma equations, is used here to study solitary wave solutions. Possibility of co-existence of refractive and compressive solitons as a function of Mach number, dust temperature and concentration of nonthermal ions, is considered. For the fixed value of nonthermal ions, it is found that the effect of increase in dust temperature is to reduce the range of co-existence of compressive and refractive solitons. Particular concentration of nonthermal ions results in disappearance of refractive solitons while the decrease in dust temperature, at this concentration restores the lost refractive solitons.

    • Author Affiliations


      Tarsem Singh Gill1 Harvinder Kaur1

      1. Department of Physics, Guru Nanak Dev University, Amritsar - 143 005, India
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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