Computer Science
Scientific paper
Jan 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983eice.conf..287j&link_type=abstract
IN: Energetic ion composition in the earth's magnetosphere (A84-37001 17-46). Tokyo/Dordrecht, Terra Scientific Publishing Co./D
Computer Science
Ion Distribution, Ion Temperature, Magnetic Storms, Magnetospheric Ion Density, Plasma Composition, Scatha Satellite, Space Plasmas, High Temperature Plasmas, Ionospheric Drift, Magnetic Equator, Magnetically Trapped Particles, Mass Spectroscopy, Plasma Clouds, Ring Currents
Scientific paper
The SCATHA spacecraft provides hot plasma (0.1-32 keV) composition measurements near the equatorial plane in the L-shell range from about 5.3 to 8.3. The SCATHA mass spectrometer has provided the first routine pitch angle distribution measurements as a function of the ion mass near the equatorial plane and has doubled the upper energy range of previous plasma composition measurements. Ion pitch angle distributions are often found to be highly anisotropic, temporally/spatially structured, and mass dependent. During geomagnetic storms, hot plasma ions of ionospheric origin are found to be a major and frequently dominant component of the ion number and energy densities in the outer ring current region of the magnetosphere. Following magnetic substorm-injection events, energy-dispersed drifting ion clouds observed at the SCATHA orbit often contain large fluxes of O(+) ions and provide insight into the spatial/temporal history of the ions. The composition of the intense warm (about 10-500 eV) ion fluxes trapped within a few degrees of the magnetic equator has been found to be dominated by H(+) ions at the measured energies above 100 eV.
Johnson Richard G.
Kaye Stanley M.
Quinn John M.
Shelley Edward G.
Strangeway Robert J.
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