Measurements of heavy ions in the low-altitude regions of the outer zone

Details Measurements of heavy ions in the low-altitude regions of the outer zone Measurements of heavy ions in the low-altitude regions of the outer zone

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.5992b&link_type=abstract

Journal of Geophysical Research, vol. 85, Nov. 1, 1980, p. 5992-5996.

Computer Science

Sound

Heavy Ions, Magnetospheric Ion Density, Outer Radiation Belt, Satellite Sounding, Abundance, Carbon, Geophysics, Helium Ions, Low Altitude, Nitrogen Ions, Oxygen Ions, Satellite Instruments, Time Dependence

Scientific paper

Measurements of heavy ions in the low-altitude outer zone are discussed. The data were acquired with a heavy-ion sensor aboard the S3-2 satellite in the time period between Dec. 24, 1975, and March 3, 1976. Mirroring fluxes of 370/sq/s/sr He ions and CNO ions were observed; thus, the CNO/He ratio was about 6.8 x 10 to the -5th. Equatorial measurements gave a much larger He/CNO ratio showing that magnetospheric processes strongly discriminate against populating the low-altitude regions with ions of increasing mass in the energy range of hundreds of keV. In addition, a comparison of the S3-2 data with those from Injun 5 acquired in Jan. 1969 in the same region of the magnetosphere indicated that the low-altitude CNO/He ratio is strongly time dependent.

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