Physics
Scientific paper
Sep 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978georl...5..773o&link_type=abstract
Geophysical Research Letters, vol. 5, Sept. 1978, p. 773-776.
Physics
1
Abundance, Explorer 51 Satellite, Far Ultraviolet Radiation, Helium Ions, Ion Production Rates, Photoionization, Solar Flux, Thermosphere, Airglow, Atmospheric Composition, Ion Density (Concentration)
Scientific paper
The ionization rate of helium in the thermosphere is inferred from He(+) abundances determined by instrumentation on the Atmosphere Explorer-C satellite. The inferred ionization rate is independent of the particular geophysical parameters of the thermosphere for solar zenith angles less than 80 deg and altitudes between 280 and 360 km. The ionization rate is consistent with a value calculated from the EUV flux of Hinteregger (1976) below 504 A.
Babeu S.
Breig E.
Hoffman John H.
Oppenheimer Michael
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