Physics
Scientific paper
Dec 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9520839l&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Dec. 1, 1990, p. 20839-20851. Research supported by NASA.
Physics
10
Angular Distribution, Energetic Particles, Magnetospheric Ion Density, Ring Currents, Ampte (Satellites), Field Aligned Currents, Proton Energy, Spatial Distribution, Trace Elements
Scientific paper
The angular distributions observed in the equatorial region for energetic protons, helium ions, and carbon-nitrogen-oxygen ions are investigated. The anisotropy index for the ions in the equatorial magnetosphere between L shells is examined, and a variety of angular distributions different from simple pancake distributions are presented. The survey reveals unusual angular distributions which suggest for the first time a net field-aligned transport of energetic ring current ions and a sharp intensity enhancement over a pitch angle range centered at 90 deg. The latter reflects a sharp boundary of ring curent energetic ions at L of roughly 3 and 4, plausibly due to the addition of a newly injected population.
Krimigis Stamatios M.
Lui Anthony Tat Yin
McEntire Richard W.
Sibeck David G.
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