Physics
Scientific paper
Oct 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984jgr....89.8872s&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 89, Oct. 1, 1984, p. 8872-8876. Research supported by the Bundesministeri
Physics
48
Geomagnetic Tail, Magnetohydrodynamic Flow, Space Plasmas, Energy Spectra, Flow Velocity, International Sun Earth Explorer 3, Size Determination
Scientific paper
A 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.
Gloeckler George
Hovestadt Dieter
Ipavich Fred M.
Klecker Berndt
Scholer Manfred
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