HF excited instabilities in space plasmas

Details HF excited instabilities in space plasmas HF excited instabilities in space plasmas

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977rasc...12.1001c&link_type=abstract

Radio Science, vol. 12, Nov.-Dec. 1977, p. 1001-1013.

Mathematics

Logic

12

Electron Gas, High Frequencies, Ionospheric Electron Density, Magnetohydrodynamic Stability, Plasma Waves, Plasma-Electromagnetic Interaction, Electron Plasma, Incoherent Scattering, Particle Acceleration, Plasma-Particle Interactions, Spread F, Temperature Distribution, Wave Excitation

Scientific paper

It has now become technologically feasible to construct ground-based HF radar systems which can deliver RF energy to the ionospheric plasma, with power densities sufficient to alter the ionospheric electron thermal budget and plasma characteristics. Effects produced by a ground-based transmitter of a power aperture of the order of 10,000 Mw sq m in the frequency range from 4 to 12 MHz are shown in a graph. Another graph presents a profile of electron gas temperature enhancement due to energy deposition by a high power HF transmitter. The conduction of high-power HF ionospheric plasma experiments is discussed. Attention is given to plasma instabilities, wave-particle acceleration effects, spacial and time scales, parametric instabilities, spread-F, and the possibility of placing high power-aperture radars on an orbiting space platform.

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