Parametric Evaluation of Active Neutron Interrogation for the Detection of Shielded Highly-Enriched Uranium in the Field

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Parametric studies using numerical simulations are being performed to assess the performance capabilities and limits of active neutron interrogation for detecting shielded highly enriched uranium (HEU). Varying the shield material, HEU mass, HEU depth inside the shield, and interrogating neutron source energy, the simulations account for both neutron and photon emission signatures from the HEU with resolution in both energy and time. The results are processed to represent different irradiation timing schemes and several different classes of radiation detectors, and evaluated using a statistical approach considering signal intensity over background. This paper describes the details of the modeling campaign and ... continued below

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Chcihester, D. L.; Seabury, E. H.; Thompson, S. J. & Clement, R. R. C. October 1, 2011.

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Parametric studies using numerical simulations are being performed to assess the performance capabilities and limits of active neutron interrogation for detecting shielded highly enriched uranium (HEU). Varying the shield material, HEU mass, HEU depth inside the shield, and interrogating neutron source energy, the simulations account for both neutron and photon emission signatures from the HEU with resolution in both energy and time. The results are processed to represent different irradiation timing schemes and several different classes of radiation detectors, and evaluated using a statistical approach considering signal intensity over background. This paper describes the details of the modeling campaign and some preliminary results, weighing the strengths of alternative measurement approaches for the different irradiation scenarios.

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  • IEEE Nuclear Science Symposium,Valencia, Spain,10/23/2011,10/29/2011

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  • Report No.: INL/CON-11-22046
  • Grant Number: DE-AC07-05ID14517
  • Office of Scientific & Technical Information Report Number: 1034793
  • Archival Resource Key: ark:/67531/metadc843777

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  • October 1, 2011

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  • May 19, 2016, 3:16 p.m.

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  • June 17, 2016, 10:26 p.m.

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Chcihester, D. L.; Seabury, E. H.; Thompson, S. J. & Clement, R. R. C. Parametric Evaluation of Active Neutron Interrogation for the Detection of Shielded Highly-Enriched Uranium in the Field, article, October 1, 2011; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc843777/: accessed November 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.