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Ion-acoustic solitons in multispecies spatially inhomogeneous plasmas

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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

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Authors and Affiliations

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

    Tarsem Singh Gill & Nareshpal Singh Saini

  2. Department of Physics, Khalsa College, 143 002, Amritsar, India

    Harvinder Kaur

Authors
  1. Tarsem Singh Gill
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  2. Harvinder Kaur
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  3. Nareshpal Singh Saini
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Gill, T.S., Kaur, H. & Singh Saini, N. Ion-acoustic solitons in multispecies spatially inhomogeneous plasmas. Pramana - J Phys 66, 1049–1056 (2006). https://doi.org/10.1007/BF02708458

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  • DOI: https://doi.org/10.1007/BF02708458

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