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The Study of Electron Acoustic Waves (EAWs) in Non-thermal Plasma

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Abstract

Using the kinetic theory approach, a theoretical investigation has been made to study the electron acoustic waves (EAWs) in non-thermal plasma. The dispersion relation \(\omega _{r}\) and Landau damping rate \(\gamma \) for Langmuir waves (LWs) and electron acoustic waves (EAWs) are derived in a three component (ions, cold electrons and hot electrons) plasma, characterized by non-thermal Cairn’s distribution function. Analytical expressions show that the real frequency \(\omega _{r}\) and Landau damping rate \(\gamma \) are strongly influenced by non-thermal parameter \(\alpha \), hot to cold electron temperature ratio \(T_{h}/T_{c}\) and by the population ratio of hot to cold electron \(n_{0h}/n_{0c}\). Furthermore, in the absence of non-thermal particles the well-known Maxwellian results are retrieved. For illustration the present model has been applied to space and astrophysical plasma such as: geomagnetic tail, cusp of the magnetosphere and the dayside auroral acceleration region where the cold and hot electrons population exist.

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Authors and Affiliations

  1. Department of Physics, University of Malakand, Chakdara, Khyber Pakhtun Khwa, 18800, Pakistan

    H. Rashid, U. Zakir & A. Zeeshan

  2. Department of Applied Physical and Material Sciences, University of Swat, Swat, Khyber Pakhtun Khwa, 19200, Pakistan

    F. Hadi

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All the authors contributed equally in writing and preparing this manuscript.

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Correspondence to U. Zakir.

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Rashid, H., Zakir, U., Hadi, F. et al. The Study of Electron Acoustic Waves (EAWs) in Non-thermal Plasma. Arab J Sci Eng 48, 835–843 (2023). https://doi.org/10.1007/s13369-022-07043-6

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  • DOI: https://doi.org/10.1007/s13369-022-07043-6

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