EXOS D (Akebono) suprathermal mass spectrometer observations of the polar wind

Details EXOS D (Akebono) suprathermal mass spectrometer observations of the polar wind EXOS D (Akebono) suprathermal mass spectrometer observations of the polar wind

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....9811191a&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A7, p. 11,191-11,203.

Physics

83

Exos-D Satellite, Magnetospheric Ion Density, Plasmapause, Polar Caps, Wind Velocity, Auroral Zones, Mass Spectrometers, Statistical Analysis

Scientific paper

Observations of the H(+), He(+), and O(+) polar wind ions in the polar cap above the collision-dominated altitudes (greater than 2000 km), from the suprathermal mass spectrometer (SMS) on EXOS D (Akebono) are reported. A statistical study of the altitude, invariant latitude, and magnetic local time distributions of the parallel velocities of the respective ion species is described, and preliminary estimates of ion temperatures and densities, uncorrected for perpendicular drifts and spacecraft potential effects, are also presented. For all three ion species, the parallel ion velocity increased with altitude. In the high-latitude polar cap, the average H(+) velocity reached 1 km/s near 2000 km, as did the He(+) velocity near 3000 km and the O(+) velocity near 6000 km.

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