Physics
Scientific paper
Feb 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jgr....82..689m&link_type=abstract
Journal of Geophysical Research, vol. 82, Feb. 1, 1977, p. 689-695.
Physics
39
Charge Exchange, Hydrogen Atoms, Ion Atom Interactions, Plasmapause, Electron Energy, Explorer 51 Satellite, Ion Density (Concentration), Ion Temperature, Midlatitude Atmosphere
Scientific paper
Data on ion and electron temperatures and concentrations to several thousand kilometers of altitude were obtained from the Atmosphere Explorer C satellite for 1974 and to 850 km from Arecibo incoherent scatter radar measurements. These data were used to normalize diffusive equilibrium profiles. From these profiles and by using the neutral atmospheric model of Jacchia (1971) and a new hydrogen model, the charge-exchange-induced neutral hydrogen escape fluxes for equatorial and middle latitudes were calculated. The data confirm earlier estimates that the charge exchange loss is more important than Jeans escape for the earth. It is also found that inside the plasmapause this charge exchange process with hot plasmapheric ions is the major production and loss process for the satellite population in the hydrogen geocorona.
Maher J. Jr. L.
Tinsley Brian A.
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