NEUTRON ALGORITHM VERIFICATION TESTING

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Active well coincidence counter assays have been performed on uranium metal highly enriched in {sup 235}U. The data obtained in the present program, together with highly enriched uranium (HEU) metal data obtained in other programs, have been analyzed using two approaches, the standard approach and an alternative approach developed at BNL. Analysis of the data with the standard approach revealed that the form of the relationship between the measured reals and the {sup 235}U mass varied, being sometimes linear and sometimes a second-order polynomial. In contrast, application of the BNL algorithm, which takes into consideration the totals, consistently yielded linear ... continued below

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8 pages

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COWGILL,M.; MOSBY,W. & LABORATORY-WEST, ARGONNE NATIONAL July 19, 2000.

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Description

Active well coincidence counter assays have been performed on uranium metal highly enriched in {sup 235}U. The data obtained in the present program, together with highly enriched uranium (HEU) metal data obtained in other programs, have been analyzed using two approaches, the standard approach and an alternative approach developed at BNL. Analysis of the data with the standard approach revealed that the form of the relationship between the measured reals and the {sup 235}U mass varied, being sometimes linear and sometimes a second-order polynomial. In contrast, application of the BNL algorithm, which takes into consideration the totals, consistently yielded linear relationships between the totals-corrected reals and the {sup 235}U mass. The constants in these linear relationships varied with geometric configuration and level of enrichment. This indicates that, when the BNL algorithm is used, calibration curves can be established with fewer data points and with more certainty than if a standard algorithm is used. However, this potential advantage has only been established for assays of HEU metal. In addition, the method is sensitive to the stability of natural background in the measurement facility.

Physical Description

8 pages

Notes

INIS; OSTI as DE00759052

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  • 41ST ANNUAL MEETING OF THE INSTITUTE OF NUCLEAR MATERIALS MANAGEMENT, NEW ORLEANS, LA (US), 07/16/2000--07/20/2000

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  • Report No.: BNL--67165
  • Report No.: GD0604020
  • Grant Number: AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 759052
  • Archival Resource Key: ark:/67531/metadc702690

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  • July 19, 2000

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • Nov. 9, 2015, 1:23 p.m.

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COWGILL,M.; MOSBY,W. & LABORATORY-WEST, ARGONNE NATIONAL. NEUTRON ALGORITHM VERIFICATION TESTING, article, July 19, 2000; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc702690/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.