The plasma line revisited as an aeronomical diagnostic - Suprathermal electrons, solar EUV, electron-gas thermal balance

Details The plasma line revisited as an aeronomical diagnostic - Suprathermal electrons, solar EUV, electron-gas thermal balance The plasma line revisited as an aeronomical diagnostic - Suprathermal electrons, solar EUV, electron-gas thermal balance

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977georl...4..565c&link_type=abstract

Geophysical Research Letters, vol. 4, Dec. 1977, p. 565-567.

Physics

Aeronomy, Ionospheric Propagation, Plasma Spectra, Plasma Waves, Far Ultraviolet Radiation, Heat Balance, Line Spectra, Plasma Diagnostics, Radiant Flux Density, Solar Radiation, Spectrum Analysis

Scientific paper

Spectra of plasma wave intensities in the ionosphere over Arecibo are calculated and compared with those from observations of the plasma line intensity. This approach involving directly observed quantities avoids the uncertainties that have plagued past comparisons with photoelectron theory. In addition, careful comparisons in physically relevant segments of the spectra show that any significant increase in the magnitude of the solar EUV flux would lead to a contradiction of the observed plasma wave intensities. Further, the comparisons indicate that resolution of the thermal electron-gas heat balance problem must be sought through better heat transfer rates (e.g., heating and cooling rates, etc.), rather than in the solar EUV. This approach utilizes more fully the potential of the plasma line experiment as a diagnostic tool for aeronomical studies, (e.g., photoelectrons, auroral secondaries, ionosphere-modification experiments, etc.).

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