Effects of Ion-Neutral Collisions on Ion-Acoustic Instabilities in the Auroral Ionosphere
The effect of ion-neutral atom (or molecule) collisions on the excitation of ion-acoustic instabilities in the auroral ionosphere is considered. These collisions may play an important role in selecting the wavelength of the perturbations that are most likely to grow at any given height. The results of the calculations are compared with observational evidence obtained from radio star scintillations and radar aurora echoes.
KeywordsHeight Range Auroral Region Radar Echo Giant Pulsation Auroral Ionosphere
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