Physics
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.4079g&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 90, May 1, 1985, p. 4079-4089. NASA-supported research.
Physics
18
Energetic Particles, Energy Dissipation, International Sun Earth Explorer 1, Magnetospheric Electron Density, Plasma Diagnostics, Space Plasmas, Elliptical Orbits, Magnetic Storms, Satellite-Borne Instruments, Spatial Distribution
Scientific paper
An energy dispersion feature observed by the ISEE 1 medium energy particle instrument is reported. This feature is characterized by enhancements in both electron and ion fluxes which occur in the 20-200 keV energy range and at radial distances from 5 to 13.5 earth radii. There is a strong energy dependence in the onset times of the enhancements. The time period between the first appearance of an enhancement at high energy to its eventual disappearance in the 20 keV channel can be as much as an hour. The duration of the enhancement in a given energy channel decreases with increasing energy. The species and pitch angle of particles in which the feature is most marked depend on local time. It is shown that the feature is a new manifestation of an old phenomenon, the drift dispersion that frequently produces signatures in particle data from geosynchronous satellites.
Greenspan Marian E.
Mauk Barry H.
Meng Ching I.
Williams Jimmy D.
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