A theoretical investigation is made on the positron-acoustic (PA) shock waves (SHWs) in an unmagnetized electron-positron-ion plasma containing immobile positive ions, cold mobile positrons, and hot positrons and electrons following the kappa (κ) distribution. The cold positron kinematic viscosity is taken into account, and the reductive perturbation method is used to derive the Burgers equation. It is found that the viscous force acting on cold mobile positron fluid is a source of dissipation and is responsible for the formation of the PA SHWs. It is also observed that the fundamental properties of the PA SHWs are significantly modified by the effects of different parameters associated with superthermal (κ distributed) hot positrons and electrons.
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June 2015
Research Article|
June 17 2015
Positron-acoustic shock waves associated with cold viscous positron fluid in superthermal electron-positron-ion plasmas
M. J. Uddin;
M. J. Uddin
a)
Department of Physics,
Jahangirnagar University
, Savar, Dhaka 1342, Bangladesh
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M. S. Alam;
M. S. Alam
Department of Physics,
Jahangirnagar University
, Savar, Dhaka 1342, Bangladesh
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A. A. Mamun
A. A. Mamun
Department of Physics,
Jahangirnagar University
, Savar, Dhaka 1342, Bangladesh
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a)
Email: josim.phys2007@gmail.com
Phys. Plasmas 22, 062111 (2015)
Article history
Received:
February 10 2015
Accepted:
May 26 2015
Citation
M. J. Uddin, M. S. Alam, A. A. Mamun; Positron-acoustic shock waves associated with cold viscous positron fluid in superthermal electron-positron-ion plasmas. Phys. Plasmas 1 June 2015; 22 (6): 062111. https://doi.org/10.1063/1.4922478
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