Suprathermal ion fluxes in the plasma sheet

Details Suprathermal ion fluxes in the plasma sheet Suprathermal ion fluxes in the plasma sheet

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990georl..17..275b&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 17, March 1990, p. 275-278.

Physics

3

Geomagnetic Tail, Magnetic Storms, Magnetospheric Ion Density, Plasma Layers, Helium Ions, Hydrogen Ions, Oxygen Ions

Scientific paper

About 14,000 measurements of the three major suprathermal ion species, H(+), O(+), and He(2+), in the earth's plasma sheet are compared for differences in the ion fluxes between the central plasma sheet and the plasma sheet boundary layer as well as between magnetically quiet and disturbed intervals. The H(+) and He(2+) spectra are nearly identical in both regions as well as during quiet and disturbed times, except for the absolute flux levels. The O(+) spectra are always considerably harder. The spectral shapes of all three ion species and their relative abundances do not change between central plasma sheet and plasma sheet boundary layer. The ratios of the ion fluxes during disturbed intervals to those during quiet times are best ordered in energy per charge and nearly identical in both regions.

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