Electron-acoustic_solitary_structures_in_two-electron-temperature_plasma_with_superthermal_electrons

Details Electron-acoustic_solitary_structures_in_two-electron-temperature_plasma_with_superthermal_electrons Electron-acoustic_solitary_structures_in_two-electron-temperature_plasma_with_superthermal_electrons

2011-12-17

arxiv.org/abs/1112.4046v1

Physics

Plasma Physics

Accepted for publication in Astrophysics & Space Science

Scientific paper

The propagation of nonlinear electron- acoustic waves (EAWs) in an unmagnetized collision- less 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) equa- tion for the first-order potential. The small amplitude electron-acoustic solitary wave, e.g., soliton and dou- ble 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.

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