Radioactive anomaly discrimination from spectral ratios

Maniscalco, James; Sjoden, Glenn; Chapman, Mac Clements

Title: Radioactive anomaly discrimination from spectral ratios

Abstract

A method for discriminating a radioactive anomaly from naturally occurring radioactive materials includes detecting a first number of gamma photons having energies in a first range of energy values within a predetermined period of time and detecting a second number of gamma photons having energies in a second range of energy values within the predetermined period of time. The method further includes determining, in a controller, a ratio of the first number of gamma photons having energies in the first range and the second number of gamma photons having energies in the second range, and determining that a radioactive anomaly is present when the ratio exceeds a threshold value.

Inventors:: Maniscalco, James; Sjoden, Glenn; Chapman, Mac Clements

Issue Date:: 2013-08-20

Research Org.:: Quintell of Ohio, LLC (Beachwood, OH)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1093253

Patent Number(s):: 8513618

Application Number:: 13/338,538

Assignee:: Quintell of Ohio, LLC (Beachwood, OH)

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
G01T1/17 - Circuit arrangements not adapted to a particular type of detector {

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

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DOE Contract Number:: FC52-09NA29293

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats


                    Maniscalco, James, Sjoden, Glenn, and Chapman, Mac Clements. Radioactive anomaly discrimination from spectral ratios.  United States: N. p., 2013. 
        Web.

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                    Maniscalco, James, Sjoden, Glenn, & Chapman, Mac Clements. Radioactive anomaly discrimination from spectral ratios.  United States.

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                    Maniscalco, James, Sjoden, Glenn, and Chapman, Mac Clements. Tue .  
        "Radioactive anomaly discrimination from spectral ratios".  United States.  https://www.osti.gov/servlets/purl/1093253.

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@article{osti_1093253,

  title        = {Radioactive anomaly discrimination from spectral ratios},

  author       = {Maniscalco, James and Sjoden, Glenn and Chapman, Mac Clements},

  abstractNote = {A method for discriminating a radioactive anomaly from naturally occurring radioactive materials includes detecting a first number of gamma photons having energies in a first range of energy values within a predetermined period of time and detecting a second number of gamma photons having energies in a second range of energy values within the predetermined period of time. The method further includes determining, in a controller, a ratio of the first number of gamma photons having energies in the first range and the second number of gamma photons having energies in the second range, and determining that a radioactive anomaly is present when the ratio exceeds a threshold value.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2013},

  month        = {8}

}

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Works referenced in this record:

Age-dating of highly enriched Uranium by γ-spectrometry
journal, February 2005

Tam Nguyen, Cong
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 229, Issue 1
https://doi.org/10.1016/j.nimb.2004.10.089

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Title: Radioactive anomaly discrimination from spectral ratios

Abstract

Citation Formats

Age-dating of highly enriched Uranium by γ-spectrometry journal, February 2005

Age-dating of highly enriched Uranium by γ-spectrometry
journal, February 2005