Physics
Scientific paper
Mar 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995georl..22..627t&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 22, no. 5, p. 627-630
Physics
1
Current Sheets, Electron Distribution, Geomagnetic Tail, Inductance, Ion Currents, Particle Acceleration, Particle Energy, Ampte (Satellites), Magnetic Fields, Satellite Observation
Scientific paper
In this study we examine observations made by AMPTE/CCE of energetic ion bursts during seven substorm periods when the satellite was located near the neutral sheet, and CCE observed the disruption cross-tail current in situ. We compare ion observations to analytic calculations of particle acceleration. We find that the acceleration region size, which we assume to be essentially the current diruption region, to be on the order of 1 R(sub E). Events exhibiting weak acceleration had either relatively small acceleration regions (apparently associated with pseudobreakup activity on the ground) or relatively small changes in the local magnetic field (suggesting that the magnitude of the local current disruption was limited). These results add additional support for the view that the particle bursts observed during turbulent current sheet disruptions are due to inductive acceleration of ions.
Goodrich Charles Carson
Lopez Robert E.
Taktakishvili A.
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