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Characteristics of plasmoidlike structures in the distant magnetotailA statistical analysis is presented of energetic particle burst events in the distant geomagnetic tail which have the particle characteristics of plasmoids as described by Hanes et al. (1984) and Scholer et al. (1984). The average velocities of the plasmoids are more or less evenly distributed between about 300 km/s and about 1000 km/s, with a mean value of about 600 km/s. Most plasmoids have a length between about 50 and 100 earth radii, with a mean value of about 80 earth radii. The proton energy spectra are always steeper than power law. The proton differential intensity at 30 keV varies between 100 and 1000 protons/sq cm/s/sr/keV, with an average value of about 500 protons/sq cm/s/sr/keV. This value is about one order of magnitude smaller than typical values in the near-earth plasma sheet.
Document ID
19850029385
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Scholer, M.
(Max-Planck-Inst. fuer Physik und Astrophysik Munich, Germany)
Hovestadt, D.
(Max-Planck-Inst. fuer Physik und Astrophysik Munich, Germany)
Klecker, B.
(Max-Planck-Institut fuer Physik und Astrophysik Garching, Germany)
Gloeckler, G.
(Max-Planck-Inst. fuer Physik und Astrophysik Munich, Germany)
Ipavich, F. M.
(Maryland, University College Park, MD, United States)
Date Acquired
August 12, 2013
Publication Date
October 1, 1984
Publication Information
Publication: Journal of Geophysical Research
Volume: 89
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
85A11536
Funding Number(s)
CONTRACT_GRANT: NAS5-26739
Distribution Limits
Public
Copyright
Other

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