Physics
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19.1919w&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 19, no. 19, p. 1919-1922.
Physics
33
Auroral Arcs, Electromagnetic Radiation, Electromagnetic Scattering, Ion Acoustic Waves, Ion Beams, Plasma Waves, Eiscat Radar System (Europe), Field Aligned Currents, Line Spectra, Wave Scattering
Scientific paper
Observations by the EISCAT and Millstone Hill radars of strongly enhanced, often asymmetric, ion acoustic line spectra in the topside auroral ionosphere have been reported recently by a number of researchers. Such strongly enhanced ion acoustic line spectra are shown to arise naturally in a plasma unstable to the ion-ion two-stream instability. A linear theory of density fluctuations is used for the calculations, which should be applicable to weakly unstable non-magnetized plasmas near the onset threshold of the instability.
Forme F. R. E.
Mishin Evgeni V.
Opgenoorth Hermann J.
Persson A. L. M.
Volokitin A. S.
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