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Title: Real time method and computer system for identifying radioactive materials from HPGe gamma-ray spectroscopy

Abstract

A real-time method and computer system for identifying radioactive materials which collects gamma count rates from a HPGe gamma-radiation detector to produce a high-resolution gamma-ray energy spectrum. A library of nuclear material definitions ("library definitions") is provided, with each uniquely associated with a nuclide or isotope material and each comprising at least one logic condition associated with a spectral parameter of a gamma-ray energy spectrum. The method determines whether the spectral parameters of said high-resolution gamma-ray energy spectrum satisfy all the logic conditions of any one of the library definitions, and subsequently uniquely identifies the material type as that nuclide or isotope material associated with the satisfied library definition. The method is iteratively repeated to update the spectrum and identification in real time.

Inventors:
 [1];  [2];  [3];  [4];  [2];  [2]
  1. Alamo, CA
  2. Livermore, CA
  3. Dublin, CA
  4. Tracy, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
919360
Patent Number(s):
7285784
Application Number:
10/828,010
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Rowland, Mark S, Howard, Douglas E, Wong, James L, Jessup, James L, Bianchini, Greg M, and Miller, Wayne O. Real time method and computer system for identifying radioactive materials from HPGe gamma-ray spectroscopy. United States: N. p., 2007. Web.
Rowland, Mark S, Howard, Douglas E, Wong, James L, Jessup, James L, Bianchini, Greg M, & Miller, Wayne O. Real time method and computer system for identifying radioactive materials from HPGe gamma-ray spectroscopy. United States.
Rowland, Mark S, Howard, Douglas E, Wong, James L, Jessup, James L, Bianchini, Greg M, and Miller, Wayne O. Tue . "Real time method and computer system for identifying radioactive materials from HPGe gamma-ray spectroscopy". United States. https://www.osti.gov/servlets/purl/919360.
@article{osti_919360,
title = {Real time method and computer system for identifying radioactive materials from HPGe gamma-ray spectroscopy},
author = {Rowland, Mark S and Howard, Douglas E and Wong, James L and Jessup, James L and Bianchini, Greg M and Miller, Wayne O},
abstractNote = {A real-time method and computer system for identifying radioactive materials which collects gamma count rates from a HPGe gamma-radiation detector to produce a high-resolution gamma-ray energy spectrum. A library of nuclear material definitions ("library definitions") is provided, with each uniquely associated with a nuclide or isotope material and each comprising at least one logic condition associated with a spectral parameter of a gamma-ray energy spectrum. The method determines whether the spectral parameters of said high-resolution gamma-ray energy spectrum satisfy all the logic conditions of any one of the library definitions, and subsequently uniquely identifies the material type as that nuclide or isotope material associated with the satisfied library definition. The method is iteratively repeated to update the spectrum and identification in real time.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {10}
}

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Works referenced in this record:

Portable system for nuclear, chemical agent, and explosives identification
conference, October 1999

  • Parker, Winifred E.; Buckley, W. M.; Kreek, S. A.
  • SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, SPIE Proceedings
  • https://doi.org/10.1117/12.363678