Expected precision of neutron multiplicity measurements of waste drums

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DOE facilities are beginning to apply passive neutron multiplicity counting techniques to the assay of plutonium scrap and residues. There is also considerable interest in applying this new measurement technique to 208-liter waste drums. The additional information available from multiplicity counting could flag the presence of shielding materials or improve assay accuracy by correcting for matrix effects such as ({alpha},n) induced fission or detector efficiency variations. The potential for multiplicity analysis of waste drums, and the importance of better detector design, can be estimated by calculating the expected assay precision using a Figure of Merit code for assay variance. This ... continued below

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10 p.

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Ensslin, N.; Krick, M.S. & Menlove, H.O. August 1, 1995.

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DOE facilities are beginning to apply passive neutron multiplicity counting techniques to the assay of plutonium scrap and residues. There is also considerable interest in applying this new measurement technique to 208-liter waste drums. The additional information available from multiplicity counting could flag the presence of shielding materials or improve assay accuracy by correcting for matrix effects such as ({alpha},n) induced fission or detector efficiency variations. The potential for multiplicity analysis of waste drums, and the importance of better detector design, can be estimated by calculating the expected assay precision using a Figure of Merit code for assay variance. This paper reports results obtained as a function of waste drum content and detector characteristics. We find that multiplicity analysis of waste drums is feasible if a high-efficiency neutron counter is used. However, results are significantly poorer if the multiplicity analysis must be used to solve for detection efficiency.

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10 p.

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INIS; OSTI as DE95016794

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  • 36. annual meeting of the Institute for Nuclear Materials Management, Palm Desert, CA (United States), 9-12 Jul 1995

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  • Other: DE95016794
  • Report No.: LA-UR--95-2275
  • Report No.: CONF-950787--42
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 100133
  • Archival Resource Key: ark:/67531/metadc621115

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • August 1, 1995

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  • June 16, 2015, 7:43 a.m.

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  • Feb. 29, 2016, 2:49 p.m.

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Ensslin, N.; Krick, M.S. & Menlove, H.O. Expected precision of neutron multiplicity measurements of waste drums, article, August 1, 1995; New Mexico. (digital.library.unt.edu/ark:/67531/metadc621115/: accessed October 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.