Spatial distribution of energetic particles in the distant magnetotail

Details Spatial distribution of energetic particles in the distant magnetotail Spatial distribution of energetic particles in the distant magnetotail

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981jgr....86.5682m&link_type=abstract

Journal of Geophysical Research, vol. 86, July 1, 1981, p. 5682-5700.

Physics

52

Energetic Particles, Geomagnetic Tail, Geomagnetism, Magnetospheric Electron Density, Magnetospheric Proton Density, Spatial Distribution, Electron Distribution, Explorer 47 Satellite, Explorer 50 Satellite, Magnetosheath, Particle Flux Density, Plasma Sheaths

Scientific paper

The spatial distribution of energetic particles in the distant magnetotail is analyzed by using identical sets of two complementary energetic particle experiments aboard the IMP 7 and 8 spacecraft. It is noted that the combined IMP 7 and 8 data set provides nearly 10 years of satellite observation. The quantitative distributions of energetic electrons in two energy ranges and energetic protons are given in terms of occurrence frequency and the average particle flux intensity over an 80 earth radii x 70 earth radii plane perpendicular to the sun-earth line. A particle distribution in the shape of an O with a crossbar over the solar magnetospheric YZ plane in the antisolar direction is clearly demonstrated at all energies and for both species. It is pointed out that the O part of the distribution corresponds to the magnetosheath region and that the crossbar is the average plasma sheet configuration. A distinct, species dependent, dawn-dusk asymmetry in particle distribution is observed in the plasma sheet and, to a lesser extent, in the magnetosheath.

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