Portable NDA equipment for enrichment measurements for the HEU transparency program

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In October 1996, the Department of Energy (DOE) and MINATOM agreed to use portable non-destructive assay (NDA) equipment to measure the {sup 235}U enrichment of material subject to the HEU Transparency agreement. A system based on the ''enrichment meter'' method and high-purity germanium (HPGe) detectors had been previously developed for this application. Instead, sodium iodide (NaI) detectors were chosen to measure {sup 235}U enrichment because HPGe systems might reveal sensitive information. Although the accuracy of the NaI systems is less than an HPGe system, it still satisfies the transparency requirements. The equipment consists of a collimated NaI detector, a Canberra ... continued below

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920 Kilobytes pages

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Decman, D J; Glaser, J; Hernandez, J M & Luke, S J July 20, 1999.

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Description

In October 1996, the Department of Energy (DOE) and MINATOM agreed to use portable non-destructive assay (NDA) equipment to measure the {sup 235}U enrichment of material subject to the HEU Transparency agreement. A system based on the ''enrichment meter'' method and high-purity germanium (HPGe) detectors had been previously developed for this application. Instead, sodium iodide (NaI) detectors were chosen to measure {sup 235}U enrichment because HPGe systems might reveal sensitive information. Although the accuracy of the NaI systems is less than an HPGe system, it still satisfies the transparency requirements. The equipment consists of a collimated NaI detector, a Canberra Inspector Multi-channel Analyzer, and a laptop computer. The units have been used to confirm the enrichment of material at Russian facilities since January 1997. This paper compares the performance of the NaI systems with the HPGe system and discusses some significant differences.

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920 Kilobytes pages

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  • Institute of Nuclear Material Management 40th Annual Meeting, Phoenix, AZ (US), 07/26/1999--07/29/1999

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  • Report No.: UCRL-JC-135095
  • Report No.: CD3013000
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 14684
  • Archival Resource Key: ark:/67531/metadc625283

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  • July 20, 1999

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • May 6, 2016, 1:51 p.m.

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Decman, D J; Glaser, J; Hernandez, J M & Luke, S J. Portable NDA equipment for enrichment measurements for the HEU transparency program, article, July 20, 1999; California. (digital.library.unt.edu/ark:/67531/metadc625283/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.