Computer Science
Scientific paper
Sep 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.217..269q&link_type=abstract
In ESA Achievements of the Intern. Magnetospheric Study (IMS) p 269-272 (SEE N85-24544 14-46)
Computer Science
1
Geosynchronous Orbits, International Magnetospheric Study, Ion Distribution, Ionospheric Ion Density, Scatha Satellite, Earth Magnetosphere, High Temperature Plasmas, Pitch (Inclination)
Scientific paper
Hot plasma composition measurements of the near equatorial SCATHA spacecraft at geocentric distances of 5.3 to 7.8 RE, provided pitch angle distributions of ion composition in the vicinity of geosynchronous orbit. Pronounced pitch angle and spectral differences between ion species, and temporal variations within each species, are indicative of many of the complex source, energization, transport, and loss mechanisms at play in the magnetosphere. Ion populations of interest include field aligned ions below several keV which are primarily ionospheric; more energetic ions peaked at 90 deg pitch angle; and intense equatorially trapped ions below a few hundred eV, primarily protons. Ionospheric plasma is observed to take part in the substorm injection process, and there is evidence of an enhanced ionospheric source at the inner edge of the injection region.
Quinn John M.
Shelley Edward G.
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