Physics
Scientific paper
Aug 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jgr....82.3299c&link_type=abstract
Journal of Geophysical Research, vol. 82, Aug. 1, 1977, p. 3299-3303.
Physics
Electron Density (Concentration), Far Ultraviolet Radiation, Ion Density (Concentration), Solar Flux, Thermosphere, Atmospheric Chemistry, Ion Production Rates, Molecular Ions, Reaction Kinetics, Solar Activity Effects, Vertical Distribution
Scientific paper
Appropriate models of solar flux in X-rays and extreme ultraviolet (EUV) bands are presented in the light of the current status of ion chemistry in the region from 90 to 130 km and of reliable measurements of reaction rates, electron density, and ion composition. It is found that the EUV flux of Schmidtke (1976) and the X-ray flux of Manson (1976) give the best agreement between observed and theoretical electron density profiles for low solar activity. The observed increase of electron density with solar activity yields increases in EUV flux by factors of 3 and 6 and in X-ray flux by factors of 2 and 4 for moderate and high solar activity conditions, respectively. However, the values of ion composition computed with these fluxes show marked differences from the value experimentally observed, the implications of which are discussed.
Chakrabarty D. K.
Chakrabarty P.
Saha Arun K.
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