Subthreshold neutron interrogator for detection of radioactive materials

Patent · Tue May 06 04:00:00 EDT 1980

OSTI ID:7158237

Evans, M L; Menlove, H O; Baker, M P

A device 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 is disclosed. 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. 2 figs.

• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): US 4201912; A
• Application Number: PPN: US 5-948266
• OSTI ID: 7158237
• Country of Publication: United States
• Language: English

Related Subjects

055001* -- Nuclear Fuels-- Safeguards
Inspection
& Accountability-- Technical Aspects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400101 -- Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
440101 -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
BARYONS
DETECTION
ELEMENTARY PARTICLES
FAST NEUTRONS
FERMIONS
FISSIONABLE MATERIALS
HADRONS
LIQUID SCINTILLATION DETECTORS
MANAGEMENT
MATERIALS
MEASURING INSTRUMENTS
NEUTRON DETECTION
NEUTRONS
NUCLEAR MATERIALS MANAGEMENT
NUCLEONS
PROPORTIONAL COUNTERS
RADIATION DETECTION
RADIATION DETECTORS
RADIOASSAY
SCINTILLATION COUNTERS