Physics
Scientific paper
Mar 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....96.3533f&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 96, March 1, 1991, p. 3533-3548.
Physics
10
Auroral Zones, Dynamics Explorer 2 Satellite, Electron Precipitation, Photoelectrons, Electric Fields, Heuristic Methods, Low Altitude, Spacecraft Charging
Scientific paper
Model calculations are performed demonstrating the effect of weak parallel electric fields on the differential spectra of the low-energy electrons observed in the inverted-V electron precipitation events in the topside ionosphere. A comparison of the altitude dependence of the observed spectra with the model calculations shows that there can be, on average, no more than a 2-V potential drop between the altitudes of 400 and 900 km, corresponding to a distributed parallel dc electric field of less than 4 microV/m under the inverted-V electron precipitation regions. Statistical results are presented on the spectral dependence of secondary electrons on the inverted-V primary beam parameters.
Fung Shing F.
Hoffman Robert A.
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