Physics
Scientific paper
Feb 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jatp...53...17s&link_type=abstract
Journal of Atmospheric and Terrestrial Physics (ISSN 0021-9169), vol. 53, Jan.-Feb. 1991, p. 17-23. Texas Advanced Technology Pr
Physics
6
Electron Precipitation, Energetic Particles, High Energy Electrons, Outer Radiation Belt, Relativistic Particles, Ionospheric Electron Density, Remote Sensing, Satellite Instruments, Solar Protons, Solar Wind
Scientific paper
A model in which a partially filled drift loss cone plays a prominent role is presently used to investigate relativistic electron data obtained by the Defense Meteorological Satellite Program spacecraft in the outer belt region. The good agreement obtained between model predictions and observations indicates that electron drift in the drift loss cone, which is known to dominate electron precipitation phenomena at lower latitudes, is also important at outer beta latitudes. In conjunction with the degree of partial filling of the drift loss cone, this effect indicates that slow pitch angle diffusion dominates the morphology of outer belt electrons. It is concluded that half of the electron precipitation from the outer belt is due to wave-particle interactions, and the other half by auroral activity and electron drift in the drift loss cone.
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