Field-aligned ion streams in the earth's midnight region

Details Field-aligned ion streams in the earth's midnight region Field-aligned ion streams in the earth's midnight region

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982jgr....87.2301o&link_type=abstract

Journal of Geophysical Research, vol. 87, Apr. 1, 1982, p. 2301-2310.

Computer Science

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Ion Motion, Night Sky, Plasma Diagnostics, Satellite Sounding, Space Plasmas, Spaceborne Experiments, Earth Magnetosphere, Flow Velocity, Ion Density (Concentration), Lines Of Force, Plasma Layers, Positive Ions

Scientific paper

Plasma measurements from the University of California at San Diego auroral particles experiment on the geosynchronous Applied Technology Satellite 6 in the midnight region show that the low-energy ion fluxes (1-100 eV) are field aligned and are well characterized as thermal populations (1-10 eV) with a streaming velocity of 30-100 km/s along the magnetic field line. The lowest energies are found prior to injections, on quiet days, with an increase of the streaming velocity evident when an injection occurs near the satellite. Multiple peaks in the ion distribution functions are attributed to the presence of different ions species (H/+/, He/+/, O/+/, O/2+/) streaming at similar velocities, both during quiet times and as the plasma velocity increases in response to an injection.

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