Gamma radiation background measurements from Spacelab 2A Nuclear Radiation Monitor incorporating a NaI(Tl) scintillation detector was flown as part of the verification flight instrumentation on the Spacelab 2 mission, July 29 to August 6, 1985. Gamma-ray spectra were measured with better than 20 s resolution throughout most of the mission in the energy range 0.1 to 30 MeV. Knowledge of the decay characteristics and the geomagnetic dependence of the counting rates enable measurement of the various components of the Spacelab gamma-ray background: prompt secondary radiation, earth albedo, and delayed induced radioactivity. The status of the data analysis and present relevant examples of typical background behavior are covered.
Document ID
19900038264
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Paciesas, William S. (Alabama Univ. Huntsville, AL, United States)
Gregory, John C. (Alabama, University Huntsville, United States)
Fishman, Gerald J. (NASA Marshall Space Flight Center Huntsville, AL, United States)