Subthreshold neutron interrogator for detection of radioactive materials

Evans, Michael L; Menlove, Howard O; Baker, Michael P

Title: Subthreshold neutron interrogator for detection of radioactive materials

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Abstract

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. 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.

Inventors:

Evans, Michael L ^[1]; Menlove, Howard O ^[1]; Baker, Michael P ^[1]

Los Alamos, NM

Issue Date:: 1980-01-01

Research Org.:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

OSTI Identifier:: 863575

Patent Number(s):: 4201912

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS

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G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
G01V5/10 - using neutron sources {

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Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: subthreshold; neutron; interrogator; detection; radioactive; materials; device; detecting; fissionable; material; uranium; concentrations; interrogating; photoneutrons; energy; levels; below; 500; kev; typically; 26; induced; fast; neutrons; energies; interrogated; detected; liquid; scintillator; recoil; proportional; counter; sensitive; concentration; indicate; proportional counter; fast neutron; radioactive material; energy level; active material; fissionable material; radioactive materials; fast neutrons; active materials; energy levels; liquid scintillator; /376/250/

Citation Formats


                    Evans, Michael L, Menlove, Howard O, and Baker, Michael P. Subthreshold neutron interrogator for detection of radioactive materials.  United States: N. p., 1980. 
        Web.

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                    Evans, Michael L, Menlove, Howard O, & Baker, Michael P. Subthreshold neutron interrogator for detection of radioactive materials.  United States.

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                    Evans, Michael L, Menlove, Howard O, and Baker, Michael P. Tue .  
        "Subthreshold neutron interrogator for detection of radioactive materials".  United States.  https://www.osti.gov/servlets/purl/863575.

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@article{osti_863575,

  title        = {Subthreshold neutron interrogator for detection of radioactive materials},

  author       = {Evans, Michael L and Menlove, Howard O and Baker, Michael P},

  abstractNote = {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. 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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1980},

  month        = {1}

}

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