Electrostatic Solitons in Multispecies Electron-Positron Plasmas

Details Electrostatic Solitons in Multispecies Electron-Positron Plasmas Electrostatic Solitons in Multispecies Electron-Positron Plasmas

May 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ap%26ss.239..125v&link_type=abstract

Astrophysics and Space Science, Volume 239, Issue 1, pp.125-139

Astronomy and Astrophysics

Astrophysics

23

Scientific paper

Acoustic solitons are investigated in electron-positron plasmas containing equal hot and cool components of both species. The hot components are isothermal Boltzmann distributed, the cool constituents are modelled by adiabatic fluids. The equations are integrated exactly in terms of a Sagdeev potential. Solitons are shown to be possible, but no double layers, due to the symmetry in the model. Bearing in mind the constraints imposed by the Boltzmann assumption, small amplitude solitons only are found. Such findings are relevant for different kinds of astrophysical plasmas, as well as for other types of similar acoustic solitons.

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