Omnidirectional and Unidirectional Electron and Proton Fluxes

Description

Omnidirectional fluxes of 40- to 110-MeV protons and of electrons greater than about 4 MeV were separably measured by a plastic scintillator. A second plastic scintillator with an 8-deg half-angle aperture and a look direction perpendicular to the spacecraft spin axis separably measured protons above 5.2 MeV and electrons above 0.5 MeV. The ability to distinguish between the particle types was due to the presence of two discrimination levels associated with each detector. High-quality data transmission from this experiment was essentially continuous from launch until about the middle of 1966, and then intermittent. NSSDC has all the data that exist from this investigation.