Ion acoustic shock waves in a relativistic electron-positron-ion plasmas

Details Ion acoustic shock waves in a relativistic electron-positron-ion plasmas Ion acoustic shock waves in a relativistic electron-positron-ion plasmas

Nov 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009phla..373.4164s&link_type=abstract

Physics Letters A, Volume 373, Issue 45, p. 4164-4168.

Physics

23

Shock Waves And Discontinuities, Relativistic Plasmas, Viscosity, Diffusion, And Thermal Conductivity

Scientific paper

The Korteweg-de Vries-Burger (KdVB) equation is derived for ion acoustic shock waves in a weakly relativistic electron-positron-ion plasma. Electrons, positrons are considered isothermal and ions are relativistic. The travelling wave solution has been acquired by employing the tangent hyperbolic method. The vivid display of the graphical results is presented and analyzed. It is observed that amplitude and steepness of the shock wave decrease with increase of the relativistic streaming factor, the positron concentration and they increase with the increase of the coefficient of kinematic viscosity and vice versa. It is determined that at low temperature the shock wave propagates, whereas at very high temperature the solitary wave propagates in the system. The results may have relevance in astrophysical plasmas as well as in inertial confinement fusion plasmas.

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