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Temporal development of composition, spectra, and anisotropies during upstream particle eventsAn analysis is conducted of the temporal development of particle intensity, composition, and anisotropies during diffuse particle events. The observations were made with an ultra-low energy charge analyzer (ULECA) sensor. ULECA basically consists of an electrostatic deflection system and an array of solid state detectors. The simultaneous measurement of energy per charge and total energy makes it possible to determine the charge state of a particle. Spectra are derived by an iterative technique involving the numerical integration of particle spectra with the energy response functions of the individual detectors. The presented data are explained in terms of temporal and spatial structures in the upstream region. The temporal structures during the event onset are consistent with a time-dependent first-order Fermi acceleration model, as discussed by Scholer et al. (1980).
Document ID
19820033323
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ipavich, F. M.
(Max-Planck-Inst. fuer Physik und Astrophysik Garching, Germany)
Gloeckler, G.
(Maryland, University College Park, MD, United States)
Scholer, M.
(Max-Planck-Institut fuer Physik und Astrophysik Garching, Germany)
Date Acquired
August 10, 2013
Publication Date
December 1, 1981
Publication Information
Publication: Journal of Geophysical Research
Volume: 86
Subject Category
Geophysics
Accession Number
82A16858
Funding Number(s)
CONTRACT_GRANT: BMFT-RV14-B8/74
CONTRACT_GRANT: NAS5-20062
Distribution Limits
Public
Copyright
Other

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