Spatial variations in the suprathermal ion distributions during substorms in the plasma sheet

Details Spatial variations in the suprathermal ion distributions during substorms in the plasma sheet Spatial variations in the suprathermal ion distributions during substorms in the plasma sheet

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990jgr....9518871k&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 95, Nov. 1, 1990, p. 18871-18885.

Physics

19

Energetic Particles, Ion Distribution, Polar Substorms, Space Plasmas, Spatial Distribution, Particle Acceleration, Plasma Layers

Scientific paper

The preinjection and postinjection suprathermal energy spectra of the ion species H(+), O(+), He(+), and He(++) in two events in which substorm-associated particle injections were observed in both the near-earth plasma sheet and farther down the tail were determined using data obtained by the Suprathermal Energetic Ion Charge Analyzer on AMPTE IRM and the Charge Energy Mass Spectrometer on AMPTE CCE. Similar spectral changes were observed in both locations. In both cases, the spectra became harder with injection. Postinjection, the flux decreased exponentially with radial distance. The gradients observed for all ion species were very similar.

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