Abstract
Several recent observations of the distributions of low energy charged particles (100 eV≲ E ≲50keV) within the earth’s magnetosphere and its environs are examined for evidences of source (acceleration) mechanisms. Proton (0.5≲ E ≲ 50 keV) intensities in the outer radiation zone and plasma sheet are concentrated upon since this population forms the largest charged particle energy reservoir in the magnetospheric system. To date no source mechanism for these proton intensities with broad differential energy spectrums (i.e., of the plasma sheet and the storm time and quiescent ‘ring currents’) has been delineated clearly. It is suggested herein that at least the storm time ring current protons are of solar origin and are convected into the magnetotail under the influence of magnetospheric electrostatic fields or via a diffusion process driven by fluctuating magnetic and/or electric fields.
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Frank, L.A. (1970). Further Comments Concerning Low Energy Charged Particle Distributions within the Earth’s Magnetosphere and its Environs. In: McCormac, B.M. (eds) Particles and Fields in the Magnetosphere. Astrophysics and Space Science Library, vol 17. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-3284-1_31
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DOI: https://doi.org/10.1007/978-94-010-3284-1_31
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