Abstract
In the last few years (after 1976) new instruments have been used for plasmaspheric studies (‘mutual-impedance’ probe, ion energy-mass spectrometers) which have led to new results. The existence in the plasmasphere of previously unknown ions (He2+, O2+) was revealed and the pitch-angle distributions of ions with energies 10–20 eY were measured. New measurements confirmed the existence of a ‘hot’ (‘warm’) zone in the outer plasmasphere and of a midday-midnight asymmetry of the plasmasphere. The source of outer plasmasphere heating is apparently the ring-current decay; electrons are heated less than ions. The plasmasphere is not only the medium of ring current decay, but it appears that it is one of the ring-current ion sources.
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Gringauz, K.I. Plasmasphere and its interaction with the ring current. Space Sci Rev 34, 245–257 (1983). https://doi.org/10.1007/BF00175281
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DOI: https://doi.org/10.1007/BF00175281