Physics
Scientific paper
Jun 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jgr....83.2701c&link_type=abstract
Journal of Geophysical Research, vol. 83, June 1, 1978, p. 2701-2705.
Physics
20
Atmospheric Electricity, Auroras, Electric Fields, Electron Distribution, Ion Distribution, Satellite Observation, Velocity Distribution, Distribution Functions, Electron Precipitation, Explorer 12 Satellite, Lines Of Force, Particle Acceleration
Scientific paper
In the present paper, the effects of an electric field parallel to the earth's dipolar magnetic field in the auroral region are discerned by organizing the charged particle data into contours of constant velocity-space distribution function. Particle data taken on August 12, 1976 by the S3-3 satellite revealed a parallel electric field with a potential drop of 1000 V above the satellite and 2000 V below the satellite. The observed particle populations are separated in velocity space by recognizable demarcations calculated from the conservation laws (which include the electric potential) in accordance with Liouville's theorem. The high temporal and spatial resolution of charged particle data displayed in these velocity-space representations is seen to be a powerful tool for studying particle dynamics in auroral particle research.
Croley R. Jr. D.
Fennell Joseph F.
Mizera P. F.
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