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Prompt Gamma Neutron Activation (PGNAA) systems require the use of a gamma-ray spectrometer to record the gamma-ray spectrum of an object under test and allow the determination of the object's composition. Field-portable systems, such as Idaho National Laboratory's PINS system, have used standard liquid-nitrogen-cooled high-purity germanium (HPGe) detectors to perform this function. These detectors...
Radiation damage effects in BGO and BaF2 have been studied in samples of commercial material. Optical transmission and scintillator response have been measured for integrated beta/gamma doses up to 8??107 R. Measurements, at dose rates up to 106; R/hr., indicate that both materials are quite resistant to damage, with BaF2 samples exhibiting superior recovery with time. Results of preliminary measurements...
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