Satellite Instrumentation for Charged Particle Measurements III. Scintillation Spectrometer for Relativistic Electrons

A scintillation spectrometer for OV1-13 is described. Scintillation pulses are accepted for differential analysis only if in coincidence with appropriate energy depositions within an associated dE/dx detector. This allows accurate measurement of electrons in the presence of high intensities of hard protons. The dE/dx detector and additional logic reduce spectrometer sensitivity by 80%, and broaden resolution to 50%. The geometrical factor is 1.0 × 10-2 cm2-ster.