IEEE Transactions on Nuclear Science · 2006 · 17 citations · 8 references
EngineeringNuclear EngineeringRadiologyNuclear InstrumentationRadiation DetectionRadiation MeasurementGamma-ray DetectionGamma-ray InstrumentationRadiation DetectorsRadiation Imaging SystemsScintillation DetectorsX-ray DetectorsEnergyNuclear Material MonitoringPortable Gamma-ray DetectorsRadiographic InspectionRadiological Source Detection SystemsUranium AnalysisX-ray Imaging PhysicsX-ray Inspection
Sophisticated solutions are being developed by researchers to improve detection of clandestine fissile material. In this work, a simpler approach is investigated as an interim solution. Using the existing 9-MeV X-ray radiography units deployed for cargo inspection, delayed fission product gamma rays from induced photofission are seen minutes after probing a small sample of /sup 238/U. By acquiring both time and energy information, a relatively large number of usable fission products can be identified. Using the radiographic images along with an efficient portable scintillator capable of detecting gamma rays above 3 MeV may provide a cost-effective improvement to existing inspection systems.
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Analysis of fissionable material using delayed gamma rays from photofission
C. L. Hollas, D.A. Close, C.E. Moss · Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms · 1987 · 36 citations · Full text
Natural Sciences, Materials Science, Nuclear Engineering +14