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Title: The impact of positrons beam on the propagation of super freak waves in electron-positron-ion plasmas

Abstract

In this work, we examine the nonlinear propagation of planar ion-acoustic freak waves in an unmagnetized plasma consisting of cold positive ions and superthermal electrons subjected to cold positrons beam. For this purpose, the reductive perturbation method is used to derive a nonlinear Schrödinger equation (NLSE) for the evolution of electrostatic potential wave. We determine the domain of the plasma parameters where the rogue waves exist. The effect of the positron beam on the modulational instability of the ion-acoustic rogue waves is discussed. It is found that the region of the modulational stability is enhanced with the increase of positron beam speed and positron population. Second as positrons beam increases the nonlinearities of the plasma system, large amplitude ion acoustic rogue waves are pointed out. The present results will be helpful in providing a good fit between the theoretical analysis and real applications in future laboratory plasma experiments.

Authors:
 [1];  [2];  [3];  [4]
  1. Theoretical Plasma Physics Division, PINSTECH, Nilore 44000 Islamabad (Pakistan)
  2. (NCP), Shahdra Valley Road, 44000 Islamabad (Pakistan)
  3. (PIEAS), Islamabad (Pakistan)
  4. Department of Physics, Faculty of Science, Port Said University, Port Said 42521 (Egypt)
Publication Date:
OSTI Identifier:
22600043
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 23; Journal Issue: 7; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; AMPLITUDES; CATIONS; DISTURBANCES; ELECTRONS; INSTABILITY; ION ACOUSTIC WAVES; NONLINEAR PROBLEMS; PERTURBATION THEORY; PLASMA; POSITRON BEAMS; POSITRONS; SCHROEDINGER EQUATION; VELOCITY

Citation Formats

Ali Shan, S., National Centre for Physics, Pakistan Institute of Engineering and Applied Sciences, and El-Tantawy, S. A., E-mail: samireltantawy@yahoo.com. The impact of positrons beam on the propagation of super freak waves in electron-positron-ion plasmas. United States: N. p., 2016. Web. doi:10.1063/1.4958315.
Ali Shan, S., National Centre for Physics, Pakistan Institute of Engineering and Applied Sciences, & El-Tantawy, S. A., E-mail: samireltantawy@yahoo.com. The impact of positrons beam on the propagation of super freak waves in electron-positron-ion plasmas. United States. doi:10.1063/1.4958315.
Ali Shan, S., National Centre for Physics, Pakistan Institute of Engineering and Applied Sciences, and El-Tantawy, S. A., E-mail: samireltantawy@yahoo.com. Fri . "The impact of positrons beam on the propagation of super freak waves in electron-positron-ion plasmas". United States. doi:10.1063/1.4958315.
@article{osti_22600043,
title = {The impact of positrons beam on the propagation of super freak waves in electron-positron-ion plasmas},
author = {Ali Shan, S. and National Centre for Physics and Pakistan Institute of Engineering and Applied Sciences and El-Tantawy, S. A., E-mail: samireltantawy@yahoo.com},
abstractNote = {In this work, we examine the nonlinear propagation of planar ion-acoustic freak waves in an unmagnetized plasma consisting of cold positive ions and superthermal electrons subjected to cold positrons beam. For this purpose, the reductive perturbation method is used to derive a nonlinear Schrödinger equation (NLSE) for the evolution of electrostatic potential wave. We determine the domain of the plasma parameters where the rogue waves exist. The effect of the positron beam on the modulational instability of the ion-acoustic rogue waves is discussed. It is found that the region of the modulational stability is enhanced with the increase of positron beam speed and positron population. Second as positrons beam increases the nonlinearities of the plasma system, large amplitude ion acoustic rogue waves are pointed out. The present results will be helpful in providing a good fit between the theoretical analysis and real applications in future laboratory plasma experiments.},
doi = {10.1063/1.4958315},
journal = {Physics of Plasmas},
number = 7,
volume = 23,
place = {United States},
year = {Fri Jul 15 00:00:00 EDT 2016},
month = {Fri Jul 15 00:00:00 EDT 2016}
}