Earthward transport of energetic protons in the earth's plasma sheet

Details Earthward transport of energetic protons in the earth's plasma sheet Earthward transport of energetic protons in the earth's plasma sheet

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981georl...8..527l&link_type=abstract

Geophysical Research Letters, vol. 8, May 1981, p. 527-530.

Physics

24

Earth Atmosphere, Energetic Particles, Magnetospheric Proton Density, Plasma Layers, Proton Energy, Space Plasmas, Magnetospheric Instability, Power Spectra, Proton Flux Density

Scientific paper

An analysis is made to assess the transport of energetic protons (0.29-0.50 MeV) at downstream distances of 30-45 earth radii in the earth's plasma sheet surveyed by the IMP 7 and IMP 8 spacecraft. It is found that there is a net earthward transport of these particles, although tailward streaming is observed as frequently as earthward streaming. The averaged flux is 200 per sq cm s in this energy range and the total flux over the plasma sheet region is 4 x 10 to the 22nd per s. It is suggested that this net earthward flux of energetic protons may contribute to the population of the outer radiation belt.

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