Fission meter and neutron detection using poisson distribution comparison

Rowland, Mark S.; Snyderman, Neal J.

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Title: Fission meter and neutron detection using poisson distribution comparison

Abstract

A neutron detector system and method for discriminating fissile material from non-fissile material wherein a digital data acquisition unit collects data at high rate, and in real-time processes large volumes of data directly into information that a first responder can use to discriminate materials. The system comprises counting neutrons from the unknown source and detecting excess grouped neutrons to identify fission in the unknown source. Comparison of the observed neutron count distribution with a Poisson distribution is performed to distinguish fissile material from non-fissile material.

Inventors:: Rowland, Mark S.; Snyderman, Neal J.

Issue Date:: Tue Jun 19 00:00:00 EDT 2018

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1459003

Patent Number(s):: 10001571

Application Number:: 14/515,321

Assignee:: Lawrence Livermore National Security, LLC (Livermore, CA)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION

G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS

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G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
G01T1/167 - Measuring radioactive content of objects, e.g. contamination
G01T3/00 - Measuring neutron radiation

G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
G01V5/0091 - {detecting special nuclear material [SNM], e.g. Uranium-235, Uranium-233 or Plutonium-239}

Show less

DOE Contract Number:: W-7405-ENG-48

Resource Type:: Patent

Resource Relation:: Patent File Date: 2014 Oct 15

Country of Publication:: United States

Language:: English

Citation Formats


                    Rowland, Mark S., and Snyderman, Neal J. Fission meter and neutron detection using poisson distribution comparison.  United States: N. p., 2018. 
        Web.

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                    Rowland, Mark S., & Snyderman, Neal J. Fission meter and neutron detection using poisson distribution comparison.  United States.

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                    Rowland, Mark S., and Snyderman, Neal J. Tue .  
        "Fission meter and neutron detection using poisson distribution comparison".  United States.  https://www.osti.gov/servlets/purl/1459003.

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@article{osti_1459003,

  title        = {Fission meter and neutron detection using poisson distribution comparison},

  author       = {Rowland, Mark S. and Snyderman, Neal J.},

  abstractNote = {A neutron detector system and method for discriminating fissile material from non-fissile material wherein a digital data acquisition unit collects data at high rate, and in real-time processes large volumes of data directly into information that a first responder can use to discriminate materials. The system comprises counting neutrons from the unknown source and detecting excess grouped neutrons to identify fission in the unknown source. Comparison of the observed neutron count distribution with a Poisson distribution is performed to distinguish fissile material from non-fissile material.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Jun 19 00:00:00 EDT 2018},

  month        = {Tue Jun 19 00:00:00 EDT 2018}

}

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Works referenced in this record:

Detection, Identification and Analysis of Fissionable Isotopes
patent, July 1969

Keepin, G. Robert
US Patent Document 3456113
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/3456113

Method And Apparatus For Nuclear Fuel Assay With A Neutron Source And Coincident Fission Neutron Detectors
patent, January 1974

Untermyer, Samuel
US Patent Document 3,786,256
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Count logic circuit
patent, July 1978

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Subthreshold neutron interrogator for detection of radioactive materials
patent, May 1980

Evans, Michael; Menlove, Howard O.; Baker, Michael P.
US Patent Document 4,201,912
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Determining fissile content of nuclear fuel elements
patent, October 1980

Arya, Satya Prakash; Grossman, Leonard N.; Schoenig, Jr., Frederick C.
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Method of assaying uranium with prompt fission and thermal neutron borehole logging adjusted by borehole physical characteristics
patent, September 1982

Barnard, Ralston W.; Jensen, Dal H.
US Patent Document 4,350,887
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Apparatus and method for quantitative assay of generic transuranic wastes from nuclear reactors
patent, November 1984

Caldwell, John T.; Kunz, Walter; Atencio, James D.
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Measurement of radionuclides in waste packages
patent, October 1986

Brodzinski, Ronald L.; Perkins, Richard W.; Rieck, Henry G.
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Direct fissile assay of enriched uranium using random self-interrogation and neutron coincidence response
patent, October 1986

Menlove, Howard O.; Stewart, James Edward
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Source range neutron flux count rate system incorporating method and apparatus for eliminating noise from pulse signal
patent, April 1990

Gaussa, Jr., Louis W.; Graham, Kingsley F.; Lipchak, John B.
US Patent Document 4,920,548
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Advanced electronics for faster time-correlation analysis of pulse sequences
patent, December 2001

Stewart, James Edward; Krick, Merlyn S.; Bourret, Steven C.
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Fissile material detector
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Method for reduction in the interference of cosmic ray-induced neutron events in passive neutron coincidence and multiplicity counting
patent, January 2003

McElroy, Jr., Robert D.; Villani, Marcel F.
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Fission meter
patent, April 2012

Rowland, Mark S.; Snyderman, Neal J.
US Patent Document 8,155,258
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patent-application, May 2005

Grodzins, Lee; Rothschid, Peter
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Application of Neutron Correlation Techniques to Warhead Authentication: Feasibility and Conceptual Requirements?Monte Carlo Simulations and Statistical Analysis
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Application Guide to Neutron Multiplicity Counting
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Langner, D. G.; Stewart, J. E.; Pickrell, M. M.
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Similar Records

Title: Fission meter and neutron detection using poisson distribution comparison

Abstract

Citation Formats

Detection, Identification and Analysis of Fissionable Isotopes patent, July 1969

Method And Apparatus For Nuclear Fuel Assay With A Neutron Source And Coincident Fission Neutron Detectors patent, January 1974

Count logic circuit patent, July 1978

Subthreshold neutron interrogator for detection of radioactive materials patent, May 1980

Determining fissile content of nuclear fuel elements patent, October 1980

Method of assaying uranium with prompt fission and thermal neutron borehole logging adjusted by borehole physical characteristics patent, September 1982

Apparatus and method for quantitative assay of generic transuranic wastes from nuclear reactors patent, November 1984

Measurement of radionuclides in waste packages patent, October 1986

Direct fissile assay of enriched uranium using random self-interrogation and neutron coincidence response patent, October 1986

Source range neutron flux count rate system incorporating method and apparatus for eliminating noise from pulse signal patent, April 1990

Advanced electronics for faster time-correlation analysis of pulse sequences patent, December 2001

Fissile material detector patent, January 2002

Method for reduction in the interference of cosmic ray-induced neutron events in passive neutron coincidence and multiplicity counting patent, January 2003

Fission meter patent, April 2012

Detection of neutrons and sources of radioactive material patent-application, May 2005

Absolute nuclear material assay patent-application, April 2006

Physical description of nuclear materials identification system (NMIS) signatures journal, August 2000

Direct neutron spectrum measurement to validate natZr(n,2n) reaction cross-section at 14MeV journal, June 2009

Probabilities of Prompt-Neutron Emission from Spontaneous Fission journal, February 1956

Application of Neutron Correlation Techniques to Warhead Authentication: Feasibility and Conceptual Requirements?Monte Carlo Simulations and Statistical Analysis report, August 2004

Application Guide to Neutron Multiplicity Counting report, November 1998

Detection, Identification and Analysis of Fissionable Isotopes
patent, July 1969

Method And Apparatus For Nuclear Fuel Assay With A Neutron Source And Coincident Fission Neutron Detectors
patent, January 1974

Count logic circuit
patent, July 1978

Subthreshold neutron interrogator for detection of radioactive materials
patent, May 1980

Determining fissile content of nuclear fuel elements
patent, October 1980

Method of assaying uranium with prompt fission and thermal neutron borehole logging adjusted by borehole physical characteristics
patent, September 1982

Apparatus and method for quantitative assay of generic transuranic wastes from nuclear reactors
patent, November 1984

Measurement of radionuclides in waste packages
patent, October 1986

Direct fissile assay of enriched uranium using random self-interrogation and neutron coincidence response
patent, October 1986

Source range neutron flux count rate system incorporating method and apparatus for eliminating noise from pulse signal
patent, April 1990

Advanced electronics for faster time-correlation analysis of pulse sequences
patent, December 2001

Fissile material detector
patent, January 2002

Method for reduction in the interference of cosmic ray-induced neutron events in passive neutron coincidence and multiplicity counting
patent, January 2003

Fission meter
patent, April 2012

Detection of neutrons and sources of radioactive material
patent-application, May 2005

Absolute nuclear material assay
patent-application, April 2006

Physical description of nuclear materials identification system (NMIS) signatures
journal, August 2000

Direct neutron spectrum measurement to validate ^natZr(n,2n) reaction cross-section at 14MeV
journal, June 2009

Probabilities of Prompt-Neutron Emission from Spontaneous Fission
journal, February 1956

Application of Neutron Correlation Techniques to Warhead Authentication: Feasibility and Conceptual Requirements?Monte Carlo Simulations and Statistical Analysis
report, August 2004

Application Guide to Neutron Multiplicity Counting
report, November 1998