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      https://www.ias.ac.in/article/fulltext/joaa/041/0011

    • Keywords

       

      Charge varying dusty plasma; Lighter and heavier ions; Kappa described electrons; Rarefactive solitary waves.

    • Abstract

       

      We studied dust acoustic solitary waves (DASW) in a five component cometary plasma by deriving the Kadomstev–Petiashvili (KP) equation. The five components consist of two components of electrons described by kappa distributions with different temperatures and spectral indices, a lighter (hydrogen)and a heavier (oxygen) ion component, both ion components are described by Maxwellian distributions. Dust particles, with varying charge, constitute the fifth component. The system supports rarefactive DASWs whose amplitudes are larger when the charges on the dust particles vary. The amplitudes alsoincrease with increasing $z_{d0}n_{d0}$ (product of equilibrium charge number and density of dust) and increasing ion densities. It, however, decreases with increasing spectral indices of the electrons.

    • Author Affiliations

       

      A. VARGHESE1 A. C. SARITHA1 N. T. WILLINGTON2 M. MICHAEL3 S. SEBASTIAN4 G. SREEKALA5 C. VENUGOPAL1

      1. School of Pure and Applied Physics, Mahatma Gandhi University, Priyadarshini Hills, Kottayam, Kerala 686 560, India.
      2. Department of Physics, C M S College, Kottayam, Kerala 686 001, India.
      3. Department of Physics, Bharata Mata College, Kochi, Kerala 682 021, India.
      4. Department of Physics, S B College, Changanacherry, Kerala 686 101, India.
      5. Department of Physics, S D College, Alappuzha, Kerala 688 003, India.
    • Dates

       
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