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Time evolution of nonplanar electron acoustic shock waves in a plasma with superthermal electrons |
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| Authors: | Hamid Reza Pakzad Kurosh Javidan Mouloud Tribeche |
| Institution: | 1. Department of Physics, Bojnourd Branch, Islamic Azad University, Bojnourd, Iran 2. Department of Physics, Ferdowsi University of Mashhad, Mashhad, Iran 3. Theoretical Physics Laboratory, Plasma Physics Group, Faculty of Physics, University of Bab-Ezzouar, USTHB, BP 32, El Alia, Algiers, 16111, Algeria |
| Abstract: | The propagation of cylindrical and spherical electron acoustic (EA) shock waves in unmagnetized plasmas consisting of cold fluid electrons, hot electrons obeying a superthermal distribution and stationary ions, has been investigated. The standard reductive perturbation method (RPM) has been employed to derive the cylindrical/spherical Korteweg-de-Vries-Burger (KdVB) equation which governs the dynamics of the EA shock structures. The effects of nonplanar geometry, plasma kinematic viscosity and electron suprathermality on the temporal evolution of the cylindrical and spherical EA shock waves are numerically examined. |
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