Plasmoid-associated energetic ion bursts in the deep geomagnetic tail - Properties of plasmoids and the postplasmoid plasma sheet

Details Plasmoid-associated energetic ion bursts in the deep geomagnetic tail - Properties of plasmoids and the postplasmoid plasma sheet Plasmoid-associated energetic ion bursts in the deep geomagnetic tail - Properties of plasmoids and the postplasmoid plasma sheet

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987jgr....92.9997r&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 92, Sept. 1, 1987, p. 9997-10013. DOE-sponsored research.

Other

77

Geomagnetic Tail, Geomagnetism, International Sun Earth Explorers, Ion Distribution, Plasma Layers, Plasmons, Anisotropy, Boundary Layers, Electron Plasma, Ion Temperature, Maxwell-Boltzmann Density Function

Scientific paper

Using data from the ISEE 3 energetic particle anisotropy spectrometer, a detailed comparison is made of energetic ion, thermal electron, and magnetic field observations of plasmoid-associated energetic ion enhancements in the deep geomagnetic tail. Two individual plasmoids were studied in detail, and a statistical study was made of 37 plasmoids identified by Hones et al. (1984) and Scholer et al. (1984). It was found that the bulk speeds deduced from the angular anisotropies of the energetic ions, assumed to be protons, agree with those deduced from the thermal electrons to within about 200 km/s in the hot plasma regions, indicating that ions in these regions are convected with the plasma. In the plasma sheet boundary layer, on the other hand, energetic ions do stream freely along the field through the thermal plasma, and there is a considerable difference between the flow speeds obtained from the energetic ions and those obtained from thermal electrons.

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