Trapping of ion conics by downward parallel electric fields

Details Trapping of ion conics by downward parallel electric fields Trapping of ion conics by downward parallel electric fields

May 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985jgr....90.4205g&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 90, May 1, 1985, p. 4205-4210.

Physics

74

Auroral Zones, Electric Fields, Electron Beams, Energetic Particles, Ionospheric Heating, Satellite-Borne Instruments, Earth Magnetosphere, Explorer 12 Satellite, Ion Beams, Low Altitude

Scientific paper

Energetic particle data from electrostatic analyzers aboard the S3-3 satellite indicative of a downward parallel electric field at low altitudes are presented to argue for a causal connection between downward parallel electric fields and ion heating. The data include observations of upward field-aligned electron beams in regions where precipitating electron fluxes are suppressed. Evidence of downward acceleration of ions and locally mirroring ion conics is also presented. It is argued that the presence of a downward electric field may have important consequences for ion conic heating and might in fact be required for the observed heating of ions to several hundred electron volts.

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