Ionospheric heating by radio waves - Predictions for Arecibo and the satellite power station

Details Ionospheric heating by radio waves - Predictions for Arecibo and the satellite power station Ionospheric heating by radio waves - Predictions for Arecibo and the satellite power station

Apr 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.1611p&link_type=abstract

Journal of Geophysical Research, vol. 83, Apr. 1, 1978, p. 1611-1624.

Physics

Atomic Physics

5

Airglow, Ionospheric Electron Density, Ionospheric Heating, Ionospheric Temperature, Radio Frequency Heating, Atmospheric Models, D Region, E Region, Electron Density Profiles, F Region, Incoherent Scatter Radar, Microwaves, Thermal Conductivity

Scientific paper

The effect of resistive heating by radio waves on ionospheric temperatures, electron densities, and airglow emissions is examined by using numerical ionospheric structure and heat balance codes. Two cases are studied: a 3-GHz, 10-GW microwave beam from a proposed satellite power station and 1-MW and 3-MW beams of 15-MHz radio waves launched by the Arecibo antenna. The most dramatic heating effects are predicted to occur in the E region, where a thermal runaway will take place. The E region electron temperature will increase from 200 K to roughly 1000 K, and the E region electron density will increase by a factor of about three. In the F region, where thermal conductivity plays an important role, temperature increases of 200-500 K will appear along magnetic field lines passing through the radio wave beams. Radio wave heating, when combined with the diagnostic capabilities of the Arecibo incoherent scatter radar, will generate new opportunities to measure the rates of atomic physics processes and neutral atmosphere temperatures and composition at D and E region altitudes.

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