NDLI: Nonlinear Propagation of Ion-Acoustic Shock waves in Dissipative Electron–Positron–Ion Plasmas with Superthermal Electrons and Relativistic Ions

Content Provider	SpringerLink
Author	Pakzad, Hamid Reza Tribeche, Mouloud
Copyright Year	2012
Abstract	A weakly nonlinear analysis is carried out to derive the appropriate Korteweg–de Vries–Burgers-like equation for small, but finite amplitude, ion-acoustic waves in a dissipative plasma consisting of relativistic ions, Maxwell–Boltzmann distributed positrons and superthermal electrons. Our results show that in a such plasma, ion-acoustic shock waves, the spatial patterns of which are significantly modified by the relativistic and dissipative effects, may exist. Interestingly, we found that because of ion kinematic viscosity, an initial solitonic profile develops into a shock wave. This later evolves towards a monotonic profile (dissipation–dominant case) as the electrons deviate from their thermodynamic equilibrium. As the relativistic character of the plasma becomes important, the shock wave amplitude decreases. Our investigation may be taken as a prerequisite for the understanding of the shock-waves observed in the ionosphere and the auroral acceleration regions. We recall that when a high energy cosmic ray interacts with the earth’s atmosphere, it may produce an electron–positron pair with enormous velocities. The data obtained during the Alpha Magnetic Spectrometer (AMS) flight permitting to probe the radiation belts in the Earth’s innermost magnetosphere provided an evidence of the presence of positrons.
Starting Page	171
Ending Page	176
Page Count	6
File Format	PDF
ISSN	01640313
Journal	Journal of Fusion Energy
Volume Number	32
Issue Number	2
e-ISSN	15729591
Language	English
Publisher	Springer US
Publisher Date	2012-04-29
Publisher Place	Boston
Access Restriction	Subscribed
Subject Keyword	Shock waves Ion acoustic waves Relativistic effects Solitary waves e–p–i plasmas Dissipative plasmas KdVB equation Nuclear Fusion Atoms and Molecules in Strong Fields, Laser Matter Interaction Nuclear Energy Sustainable Development Energy Economics Renewable and Green Energy
Content Type	Text
Resource Type	Article
Subject	Nuclear Energy and Engineering Nuclear and High Energy Physics

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