Cylindrical and spherical electron acoustic solitary waves in the presence of superthermal hot electrons |
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| Authors: | Kurosh Javidan Hamid Reza Pakzad |
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| Institution: | 1. Department of Physics, Ferdowsi University of Mashhad, 91775-1436, Mashhad, Iran
2. Department of Physics, Bojnourd Branch, Islamic Azad University, Bojnourd, Iran
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| Abstract: | Propagation of cylindrical and spherical electron-acoustic solitary waves in unmagnetized plasmas consisting of cold electron
fluid, hot electrons obeying a superthermal distribution and stationary ions are investigated. The standard reductive perturbation
method is employed to derive the cylindrical/spherical Korteweg-de-Vries equation which governs the dynamics of electron-acoustic
solitons. The effects of nonplanar geometry and superthermal hot electrons on the behavior of cylindrical and spherical electron
acoustic soliton and its structure are also studied using numerical simulations. |
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