Test results of a new detector system for gamma ray isotopic measurements

Title: Test results of a new detector system for gamma ray isotopic measurements

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Abstract

A new type of gamma-ray detector system for isotopic measurements has been developed. This new system, a ``Duo detector`` array, consists of two intrinsic germanium detectors, a planar followed by a coaxial mounted on the same axis within a single cryostat assembly. This configuration allows the isotopic analysis system to take advantage of spectral data results that are collected simultaneously from different gamma-ray energy regimes. Princeton Gamma Tech (PGT) produced several prototypes of this Duo detector array which were then tested by Rocky Flats personnel until the design was optimized. An application for this detector design is in automated, roboticized NDA systems such as those being developed at the Los Alamos TA-55 Plutonium Facility. The Duo detector design reduces the space necessary for the isotopic instrument by a factor of two (only one liquid nitrogen dewar is needed), and also reduces the complexity of the mechanical systems and controlling software. Data will be presented on measurements of nuclear material with a Duo detector for a wide variety of matrices. Results indicate that the maximum count rate can be increased up to 100,000 counts per second yet maintaining excellent resolution and energy rate product.

Authors:

Malcom, J E; Bonner, C A; Hurd, J R ^[1]; Fleissner, ^[2]

Los Alamos National Lab., NM (United States)
EG and G Rocky Flats, Inc., Golden, CO (United States)

Publication Date:: 1993-08-01

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

Sponsoring Org.:: USDOE, Washington, DC (United States)

OSTI Identifier:: 10180440

Report Number(s):: LA-UR-93-2607; CONF-930749-43
ON: DE93018541; TRN: 93:019927

DOE Contract Number:: W-7405-ENG-36

Resource Type:: Conference

Resource Relation:: Conference: 34. annual meeting of the Institute of Nuclear Materials Management,Scottsdale, AZ (United States),18-21 Jul 1993; Other Information: PBD: [1993]

Country of Publication:: United States

Language:: English

Subject:: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION; GAMMA SPECTROMETERS; TESTING; PLUTONIUM; ISOTOPE RATIO; GAMMA DETECTION; GE SEMICONDUCTOR DETECTORS; NUCLEAR MATERIALS MANAGEMENT; 440103; 055001; NUCLEAR SPECTROSCOPIC INSTRUMENTATION; TECHNICAL ASPECTS

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                    Malcom, J E, Bonner, C A, Hurd, J R, and Fleissner,. Test results of a new detector system for gamma ray isotopic measurements.  United States: N. p., 1993. 
        Web.

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                    Malcom, J E, Bonner, C A, Hurd, J R, & Fleissner,. Test results of a new detector system for gamma ray isotopic measurements.  United States.

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                    Malcom, J E, Bonner, C A, Hurd, J R, and Fleissner,. Sun .  
        "Test results of a new detector system for gamma ray isotopic measurements".  United States.  https://www.osti.gov/servlets/purl/10180440.

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@article{osti_10180440,

  title        = {Test results of a new detector system for gamma ray isotopic measurements},

  author       = {Malcom, J E and Bonner, C A and Hurd, J R and Fleissner,},

  abstractNote = {A new type of gamma-ray detector system for isotopic measurements has been developed. This new system, a ``Duo detector`` array, consists of two intrinsic germanium detectors, a planar followed by a coaxial mounted on the same axis within a single cryostat assembly. This configuration allows the isotopic analysis system to take advantage of spectral data results that are collected simultaneously from different gamma-ray energy regimes. Princeton Gamma Tech (PGT) produced several prototypes of this Duo detector array which were then tested by Rocky Flats personnel until the design was optimized. An application for this detector design is in automated, roboticized NDA systems such as those being developed at the Los Alamos TA-55 Plutonium Facility. The Duo detector design reduces the space necessary for the isotopic instrument by a factor of two (only one liquid nitrogen dewar is needed), and also reduces the complexity of the mechanical systems and controlling software. Data will be presented on measurements of nuclear material with a Duo detector for a wide variety of matrices. Results indicate that the maximum count rate can be increased up to 100,000 counts per second yet maintaining excellent resolution and energy rate product.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/10180440},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1993},

  month        = {8}

}

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