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Head-on collision of electron-acoustic solitary waves in a plasma with superthermal hot electrons

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Abstract

The head-on collision between two electron-acoustic solitary waves in an unmagnetized plasma is investigated, including a cold electron fluid, hot electrons obeying a superthermal distribution and stationary ions. By using extended Poincare′-Lighthill-Kuo perturbation method, the analytical phase shifts following head-on collision are derived. Effects of the ratio of number density of hot electrons to number density of cold electrons α and superthermal parameter k on phase shifts are studied. It is found that hot-to-cold electron density ratio significantly modifies the phase shifts.

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Authors and Affiliations

  1. Department of Physics, Ferdowsi University of Mashhad, Mashhad, Iran

    P. Eslami

  2. Department of Physics, Mashhad Branch, Islamic Azad University, Mashhad, Iran

    M. Mottaghizadeh

  3. Department of Physics, Bojnourd Branch, Islamic Azad University, Bojnourd, Iran

    H. R. Pakzad

Authors
  1. P. Eslami
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  2. M. Mottaghizadeh
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  3. H. R. Pakzad
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Correspondence to H. R. Pakzad.

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Eslami, P., Mottaghizadeh, M. & Pakzad, H.R. Head-on collision of electron-acoustic solitary waves in a plasma with superthermal hot electrons. Indian J Phys 87, 1047–1052 (2013). https://doi.org/10.1007/s12648-013-0332-2

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  • DOI: https://doi.org/10.1007/s12648-013-0332-2

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