Physics
Scientific paper
Jan 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88..150i&link_type=abstract
Journal of Geophysical Research, vol. 88, Jan. 1, 1983, p. 150-160. Bundesministerium für Forschung und Technologie
Physics
35
Alpha Particles, Earth Atmosphere, Plasma Layers, Proton Energy, Space Plasmas, Energy Spectra, International Sun Earth Explorer 1, Proton Flux Density
Scientific paper
Detailed proton energy spectra in the quasi-stable distant plasma sheet over the energy range from approximately 13 keV to approximately 130 keV are presented. These spectra are compared with spectra of simultaneously measured alpha particles in the energy range from approximately 30 keV/Q to approximately 130 keV/Q. The proton spectra are then extended into the higher energy range up to approximately 1 MeV, thereby supplementing the study of Sarris et al. (1981). The temporal behavior of the spectra in the higher energy range is discussed. It is found that below about 16 keV the proton spectra can be represented by a Maxwellian distribution; above this level, a suprathermal tail is found that cannot be represented by a single power law.
Ipavich Fred M.
Scholer Manfred
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