New sources for the hot oxygen geocorona

Details New sources for the hot oxygen geocorona New sources for the hot oxygen geocorona

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994georl..21..657r&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 21, no. 8, p. 657-660

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Atmospheric Chemistry, Atmospheric Composition, Atmospheric Models, Exothermic Reactions, Geocoronal Emissions, Molecular Ions, Oxygen, Oxygen Atoms, Plasmasphere, Reaction Kinetics, Recombination Reactions, Thermosphere, Atomic Excitations, Daytime, Kinetic Energy, Mathematical Models, Metastable State, Nitrogen, Nitrogen Oxides, Solar Activity, Winter

Scientific paper

This paper investigates new sources of thermospheric non thermal (hot) oxygen due to exothermic reactions involving numerous minor (ion and neutral) and metastable species. Numerical calculations are performed for low altitude, daytime, winter conditions, with moderately high solar activity and low magnetic activity. Under these conditions we find that the quenching of metastable species are a significant source of hot oxygen, with kinetic energy production rates a factor of ten higher than those due to previously considered O2(+) and NO(+) dissociative recombination reactions. Some of the most significant new sources of hot oxygen are reactions involving quenching of O(+)2D, O1D), N2D), O(+)2P) and vibrationally excited N2 by atomic oxygen.

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