Please use this identifier to cite or link to this item: http://library.iigm.res.in:8080/xmlui/handle/123456789/284
Title: Electron acoustic solitary waves with non-thermal distribution of electrons
Authors: Singh, S.V.
Lakhina, G.S.
Keywords: Solitary waves
Electron-acoustic solitary waves
Fluid cold electrons
Issue Date: 2004
Citation: Nonlinear Processes in Geophysics, v.11, p.275-279, 2004, doi: 10.5194/npg-11-275-2004
Abstract: Electron-acoustic solitary waves are studied in an unmagnetized plasma consisting of non-thermally distributed electrons, fluid cold electrons and ions. The Sagdeev pseudo-potential technique is used to carry out the analysis. The presence of non-thermal electrons modifies the parametric region where electron acoustic solitons can exist. For parameters representative of auroral zone field lines, the electron acoustic solitons do not exist when either α > 0.225 or Tc/Th > 0.142, where α is the fractional non-thermal electron density, and Tc (Th) represents the temperature of cold (hot) electrons. Further, for these parameters, the simple model predicts negatively charged potential structures. Inclusion of an electron beam in the model may provide the positive potential solitary structures.
URI: http://localhost:8080/xmlui/handle/123456789/284
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