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Subthreshold neutron interrogator for detection of radioactive materials

Patent ·
OSTI ID:5574750
; ;
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):
None
OSTI ID:
5574750
Country of Publication:
United States
Language:
English

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Related Subjects

440101 -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
47 OTHER INSTRUMENTATION
654003 -- Radiation & Shielding Physics-- Neutron Interactions with Matter
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDES
ALKALINE EARTH METALS
ALLOYS
BARYONS
BASIC INTERACTIONS
BERYLLIUM
BOREHOLES
CAVITIES
CHROMIUM ALLOYS
CORROSION RESISTANT ALLOYS
CYLINDERS
DESIGN
DETECTION
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ELEMENTS
FAST NEUTRONS
FERMIONS
FISSIONABLE MATERIALS
GAMMA SOURCES
HADRONS
INTERACTIONS
IRON ALLOYS
IRON BASE ALLOYS
MEASURING INSTRUMENTS
METALS
NEUTRON DETECTION
NEUTRONS
NICKEL
NUCLEONS
OPTICAL PROPERTIES
PARTICLE INTERACTIONS
PHOTON-BARYON INTERACTIONS
PHOTON-HADRON INTERACTIONS
PHOTON-NEUTRON INTERACTIONS
PHOTON-NUCLEON INTERACTIONS
PHYSICAL PROPERTIES
PROBES
PROPORTIONAL COUNTERS
QUANTITY RATIO
RADIATION DETECTION
RADIATION DETECTORS
RADIATION SOURCES
RADIOACTIVE MATERIALS
REFLECTIVITY
SCINTILLATION COUNTERS
STAINLESS STEELS
STEELS
SURFACE PROPERTIES
TITANIUM
TRANSITION ELEMENTS
URANIUM