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Subthreshold neutron interrogator for detection of radioactive materials

Patent ·
OSTI ID:5114987
; ;
A device is described for detecting fissionable material such as uranium in low concentrations by interrogating with photoneutrons at energy levels below 500 keV, and typically about 26 keV. Induced fast neutrons having energies above 500 keV by the interrogated fissionable material are detected by a liquid scintillator or recoil proportional counter which is sensitive to the induced fast neutrons. Since the induced fast neutrons are proportional to the concentration of fissionable material, detection of induced fast neutrons indicate concentration of the fissionable material.
Assignee:
Dept. of Energy
Patent Number(s):
US 4201912
OSTI ID:
5114987
Country of Publication:
United States
Language:
English

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Related Subjects

050200* -- Nuclear Fuels-- Exploration-- (-1987)
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400101 -- Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
BARYON REACTIONS
BARYONS
CHEMICAL ANALYSIS
COUNTING TECHNIQUES
DETECTION
ELEMENTARY PARTICLES
FAST NEUTRONS
FERMIONS
FISSIONABLE MATERIALS
HADRON REACTIONS
HADRONS
MATERIALS
MEASURING INSTRUMENTS
NEUTRON DETECTION
NEUTRON REACTIONS
NEUTRONS
NUCLEAR REACTION ANALYSIS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEONS
PROPORTIONAL COUNTERS
RADIATION DETECTION
RADIATION DETECTORS
SCINTILLATION COUNTING