Physics
Scientific paper
Mar 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976georl...3..129d&link_type=abstract
Geophysical Research Letters, vol. 3, Mar. 1976, p. 129-131.
Physics
8
Electron Energy, Energy Spectra, Explorer 55 Satellite, Photoelectrons, Daytime, Electron Scattering, High Resolution, Satellite-Borne Instruments
Scientific paper
The daytime photoelectron energy spectrum has been measured at altitudes above 154 km by the photoelectron-spectrometer experiment on the Atmosphere Explorer-E satellite. Below 200 km, well-resolved peaks are observed in the spectrum corresponding to production of O(+) and N2(+) in various electronic states from photoionization of N2 and O by solar He II (304A) radiation. Vibration-rotation excitation of N2 by inelastic electron scattering is observed at 2.5 eV. The features due to nitrogen disappear from the spectrum at altitudes above 200 km.
Bostrom C. O.
Doering John P.
Peterson William K.
Potemra Thomas A.
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