Some general characteristics of upflowing ion beams over the auroral zone and their relationship to auroral electrons

Details Some general characteristics of upflowing ion beams over the auroral zone and their relationship to auroral electrons Some general characteristics of upflowing ion beams over the auroral zone and their relationship to auroral electrons

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.6820c&link_type=abstract

Journal of Geophysical Research, vol. 86, Aug. 1, 1981, p. 6820-6826. Research supported by the Lockheed Independent Research P

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94

Angular Distribution, Auroral Zones, Ion Beams, Ionospheric Electron Density, Mass Spectrometers, Satellite-Borne Instruments, Correlation, Oxygen Ions, Particle Flux Density, Protons, Statistical Analysis

Scientific paper

Some of the general characteristics of upflowing beams of protons and oxygen ions one earth radius above the auroral regions, and their relationship to auroral electrons, were determined by means of mass spectrometer and electron spectrometer data from the polar orbiting satellite S3-3. The energies of the two ion species were found to correlate well, and it was determined that oxygen ion energy was on average 1.7 times greater than that of the proton. Ion and electron fluxes appeared to behave quite independently of one another, but were limited in their range. The results of this study suggest that the protons are principally energized by a quasi-static parallel electric field, and that on a statistical basis the oxygen ions derive about half of their energy from this mechanism and the rest from some mass-dependent process.

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