Space Chamber Simulation of Altitude Variation on Plasma Wave Signatures
NAVAL RESEARCH LAB WASHINGTON DC
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The effects of increasing ion-neutral collisions on velocity-shear-driven ion cyclotron waves have been studied in simulated ionospheric conditions in the Naval Research Laboratorys Space Physics Simulation Chamber. The experiments show that shear-driven ion cyclotron waves can exist for ion-neutral collision frequencies of the order of the ion gyrofrequency. For higher collision frequencies where the ions become unmagnetized, a transition to a higher frequency mode is observed.
- Plasma Physics and Magnetohydrodynamics
- Atmospheric Physics