Radioactivity observed in scintillation counters during the HEAO-1 missionResults are reported from an analysis of radioactivity induced in the NaI medium-energy detector of the hard X-ray and low-energy gamma-ray experiment during the HEAO-1 satellite mission (1977-1978). Consideration is given to the instrument characteristics, the origin and variability of background, and the separation of cosmic-ray activity from the internal activity due to South Atlantic Anomaly trapped protons. Energy spectra and tables listing the nuclide identifications are provided.
Gruber, D. E. (California Univ. La Jolla, CA, United States)
Jung, G. V. (California Univ. La Jolla, CA, United States)
Matteson, J. L. (California, University La Jolla, United States)