Publication Date:
2019-08-16
Description:
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 disruption 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 region 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.
Keywords:
Geophysics
Type:
NASA/CR-95-207163
,
NAS 1.26:207163
,
Paper-94GL03384
,
Geophysical Research Letters (ISSN 0094-8534); 22; 5; 627-630
Format:
application/pdf
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