Computer Science
Scientific paper
Oct 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991p%26ss...39.1343r&link_type=abstract
Planetary and Space Science (ISSN 0032-0633), vol. 39, Oct. 1991, p. 1343-1350.
Computer Science
12
Auroras, Cold Plasmas, Electron Plasma, Ion Acoustic Waves, Plasma Layers, Solitary Waves, Electron Density (Concentration), Electron Energy, Plasma Composition, Rarefaction
Scientific paper
Small-amplitude ion-acoustic double layers and solitons were studied in an auroral plasma consisting of hot and cold electrons and two cold ion species (e.g. oxygen-hydrogen). For the auroral plasma parameters, the analysis predicts either rarefactive double layers or rarefactive solitons or compressive solitons existing in distinct parametric space (N sub H, T sub H/T sub C, where N sub H is a relative density of hot electrons and T sub H, C represents the temperature of hot (cold) electron population. An increase in the oxygen-number density reduces the parametric region of rarefactive double layers and at the same time pushes it toward the higher N sub H values. Both the width (half width) of the double layer (solitons) and their velocities as predicted by theory, assuming relative oxygen density of 0.2-0.8, are in good agreement with the observed values from the S3-3 and the Viking satellite data.
Lakhina Gurbax S.
Reddy R. V.
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