Physics
Scientific paper
Jun 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84.2651l&link_type=abstract
Journal of Geophysical Research, vol. 84, June 1, 1979, p. 2651-2654
Physics
2
Electron Beams, Electron Energy, Electron Scattering, Magnetic Storms, Magnetically Trapped Particles, Plasma Temperature, Ats 6, Electron Plasma, Magnetospheric Electron Density, Pitch (Inclination), Plasma Diagnostics
Scientific paper
The temperature characteristics of electron beams and trapped particles of large pitch angles during substorms have been studied by examining the plasma data of the University of California at San Diego experiment on board the geostationary ATS 6 satellite. Approximating the observed distribution functions by a single Maxwellian or a superposition of two Maxwellians, it has been deduced that the electron distribution function is characterized by two temperatures, approximately 1 and 3 keV. The 3-keV component is observed at all pitch angles from 10 to 90 deg. The 1-keV component initially appears only within the electron beams which are confined to small pitch angles (approximately 30 deg). With time, this low-temperature component appears at larger pitch angles (approximately 30 deg). This observation has been interpreted in terms of scattering of the electron beams to large pitch angles.
Deforest S.
Lin Chang-Shou
Mauk B.
McIlwain Carl E.
Parks George K.
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