scholarly journals Dust ion acoustic multi-shock wave excitations in the weakly relativistic plasmas with nonthermal nonextensive electrons and positrons

AIP Advances ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 065234 ◽  
Author(s):  
M. G. Hafez ◽  
Sudhir Singh ◽  
R. Sakthivel ◽  
S. F. Ahmed
Keyword(s):  
Shock Wave ◽  
Nonextensive Electrons ◽  
Relativistic Plasmas ◽  
Electrons And Positrons ◽  
Ion Acoustic ◽  
Nonextensive Electrons And Positrons

Nonplanar ion-acoustic Gardner solitons in a pair-ion plasma with nonextensive electrons and positrons

2012 ◽  
Vol 343 (1) ◽  
pp. 265-272 ◽  
Author(s):  
Uday Narayan Ghosh ◽  
Deb Kumar Ghosh ◽  
Prasanta Chatterjee ◽  
Mustapha Bacha ◽  
Mouloud Tribeche
Keyword(s):  
Nonextensive Electrons ◽  
Ion Plasma ◽  
Electrons And Positrons ◽  
Ion Acoustic ◽  
Nonextensive Electrons And Positrons ◽  
Gardner Solitons

Transverse instability of ion acoustic solitons in a magnetized plasma including -nonextensive electrons and positrons

2015 ◽  
Vol 81 (5) ◽  
Author(s):  
N. Akhtar ◽  
W. F. El-Taibany ◽  
S. Mahmood ◽  
E. E. Behery ◽  
S. A. Khan ◽  
...  
Keyword(s):  
Reductive Perturbation Method ◽  
Magnetized Plasma ◽  
Constant Growth Rate ◽  
Transverse Instability ◽  
Ion Density ◽  
Electrons And Positrons ◽  
Ion Acoustic ◽  
Density Concentration ◽  
The One ◽  
Nonextensive Electrons And Positrons

A nonlinear Zakharov–Kuznetsov (ZK) equation for ion acoustic solitary waves (IASWs) is derived using the reductive perturbation method (RPM) for magnetized plasmas in which the inertialess electrons and positrons are nonextensively $q$-distributed while ions are assumed to be warm and inertial. It is found that both compressive as well as rarefactive solitons coexist in the present model for different regions of non-extensive electron and positron parameters, $q_{e}$ and $q_{p}$. The magnetic field has no effect on the amplitude of the IASW, whereas the obliqueness angle of the wave propagation, the ion-to-electron temperature ratio ${\it\sigma}$ and positron-to-ion density concentration ratio $p$ affect both the amplitude and the width of the solitary wave structures. The transverse instability analysis illustrates that the one soliton solution has a constant growth rate, and it suffers from instability in the transverse direction. The relevance of the present study to astrophysical space plasmas is also discussed.

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