مقاله Electron-acoustic solitary structures in two-electron-temperature plasma with superthermal electrons : تی پی بین

خلاصه مقاله

The propagation of nonlinear electron-acoustic waves (EAWs) in an unmagnetized collisionless plasma system consisting of a cold electron fluid, superthermal hot electrons and stationary ions is investigated. A reductive perturbation method is employed to obtain a modified Korteweg–de Vries (mKdV) equation for the first-order potential. The small amplitude electron-acoustic solitary wave, e.g., soliton and double layer (DL) solutions are presented, and the effects of superthermal electrons on the nature of the solitons are also discussed. But the results shows that the weak stationary EA DLs cannot be supported by the present model.

نویسندگان

H. Chen [ School of Materials Sciences and Engineering, Nanchang University, Nanchang 330047, P.R. China ]

S.Q. Liu [ School of Sciences, Nanchang University, Nanchang 330047, P.R. China ]

کلمات کلیدی

Superthermal electrons Electron acoustic solitary waves Double layers mKdV equation

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Astrophysics and Space Science 2012

Astrophysics and Space Science publishes original contributions and invited reviews covering the entire range of astronomy, astrophysics, astrophysical cosmology, planetary and space science and the astrophysical aspects of astrobiology. This includes both observational and theoretical research, the techniques of astronomical instrumentation and data analysis and astronomical space instrumentation. We particularly welcome papers in the general fields of high-energy astrophysics, astrophysical and astrochemical studies of the interstellar medium including star formation, planetary astrophysics, the formation and evolution of galaxies and the evolution of large scale structure in the Universe. Papers in mathematical physics or in general relativity which do not establish clear astrophysical applications will no longer be considered.The journal also publishes topically selected special issues in research fields of particular scientific interest. These consist of both invited reviews and original research papers. Conference proceedings will not be considered. All papers published in the journal are subject to thorough and strict peer-reviewing.Astrophysics and Space Science features short publication times after acceptance and colour printing free of charge.

حوزه های تحت پوشش : Astrophysics , Space Science , Astrobiology , Astronomy , Observations and Techniques