Physics
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....9012209s&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 90, Dec. 1, 1985, p. 12,209-12,218. DNA-NASA-Navy-supported research.
Physics
44
Collisional Plasmas, Electrostatic Waves, Ion Cyclotron Radiation, Ionospheric Electron Density, Magnetohydrodynamic Stability, Plasma Currents, Auroral Zones, Collisionless Plasmas, F Region, Ionospheric Ion Density, Temperature Distribution
Scientific paper
A comprehensive treatment of the theory of electrostatic ion cyclotron instability in the collisional bottomside ionosphere is given. The linear dispersion relations for the ion cyclotron instability (electron and ion collisions) are derived. Analytical solutions to the dispersion relation are obtained in three limits: collisionless; weakly collisional; and collisional. In addition, the linear dispersion relation is solved numerically, using parameters typical of the high-latitude bottomside ionosphere. It is pointed out that the linear growth rates in the bottomside collisional regime can be of the same order as the corresponding topside collisionless growth rates. A nonlinear saturation mechanism for the electrostatic ion cyclotron instability is proposed on the basis of Dupree's (1966) resonance broadening theory.
Chaturvedi P. K.
Huba Joseph D.
Keskinen Michael J.
Ossakow S. L.
Satyanarayana P.
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