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Modulation instability and rogue wave structures of positron-acoustic waves in q-nonextensive plasmas

Author

Listed:
  • Bains, A.S.
  • Tribeche, Mouloud
  • Saini, N.S.
  • Gill, T.S.

Abstract

A theoretical investigation is made to study envelope excitations and rogue wave structures of the newly predicted positron-acoustic waves (PAWs) in a plasma with nonextensive electrons and nonextensive hot positrons. The reductive perturbation technique (RPT) is used to derive a nonlinear Schrödinger equation-like (NLSE) which governs the modulational instability (MI) of the PAWs. The NLSE admits localized envelope solitary wave solutions of bright and dark type. These envelope solutions depend upon the intrinsic plasma parameters. It is found that the MI of the PAWs is significantly affected by nonextensivity and other plasma parameters. Further, the analysis is extended for the rogue wave structures of the PAWs. The findings of the present investigation should be useful in understanding the acceleration mechanism of stable electrostatic wave packets in four components nonextensive plasmas.

Suggested Citation

  • Bains, A.S. & Tribeche, Mouloud & Saini, N.S. & Gill, T.S., 2017. "Modulation instability and rogue wave structures of positron-acoustic waves in q-nonextensive plasmas," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 466(C), pages 111-119.
    • Handle: RePEc:eee:phsmap:v:466:y:2017:i:c:p:111-119
    DOI: 10.1016/j.physa.2016.09.003
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