Head-on collision of electron acoustic solitary waves in a plasma with nonextensive hot electrons |
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Authors: | Parvin Eslami Marzieh Mottaghizadeh Hamid Reza Pakzad |
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Institution: | 1. Department of Physics, Ferdowsi University of Mashhad, Mashhad, Iran 2. Department of Physics, Mashhad Branch, Islamic Azad University, Mashhad, Iran 3. Department of Physics, Bojnourd Branch, Islamic Azad University, Bojnourd, Iran
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Abstract: | The head-on collision between two electron-acoustic solitary waves (EASWs) in an unmagnetized plasma is investigated, including
a cold electrons fluid, hot electrons, obeying a nonextensive distribution and stationary ions. By using the extended Poincaré-Lighthill–Kuo
(PLK) perturbation method, the analytical phase shifts following the head-on collision are derived. The effects of the ratio
of the number density of hot electrons to the number density of cold electrons α, and the nonextensive parameter q on the phase shifts are studied. It is found that q and the hot-to-cold electron density ratio significantly modify the phase shifts. |
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