Determining Pu-239 content by resonance transmission analysis using a filtered reactor beam.

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A novel technique has been developed at Argonne National Laboratory to determine the {sup 239}Pu content in EBR-II blanket elements using resonance transmission analysis (RTA) with a filtered reactor beam. The technique uses cadmium and gadolinium filters along with a {sup 239}Pu fission chamber to isolate the 0.3 eV resonance in {sup 239}Pu. In the energy range from 0.1 to 0.5 eV, the total microscopic cross-section of {sup 239}Pu is significantly larger than the cross-sections of {sup 238}U and {sup 235}U. This large difference in cross-section allows small amounts of {sup 239}Pu to be detected in uranium samples. Tests using ... continued below

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23 p.

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Klann, R. T. November 25, 1998.

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Description

A novel technique has been developed at Argonne National Laboratory to determine the {sup 239}Pu content in EBR-II blanket elements using resonance transmission analysis (RTA) with a filtered reactor beam. The technique uses cadmium and gadolinium filters along with a {sup 239}Pu fission chamber to isolate the 0.3 eV resonance in {sup 239}Pu. In the energy range from 0.1 to 0.5 eV, the total microscopic cross-section of {sup 239}Pu is significantly larger than the cross-sections of {sup 238}U and {sup 235}U. This large difference in cross-section allows small amounts of {sup 239}Pu to be detected in uranium samples. Tests using a direct beam from a 250 kW TRIGA reactor have been performed with stacks of depleted uranium and {sup 239}Pu foils. Preliminary measurement results are in good agreement with the predicted results up to about two weight percent of {sup 239}Pu in the sample. In addition, measured {sup 239}Pu masses were in agreement with actual sample masses with uncertainties less than 3.8 percent.

Physical Description

23 p.

Notes

INIS; OSTI as DE00011109

Medium: P; Size: 23 pages

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  • 6th NDA Waste Characterization Conference, Salt Lake City, UT (US), 11/17/1998--11/19/1998

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  • Report No.: ANL/TD/CP-97678
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 11109
  • Archival Resource Key: ark:/67531/metadc628106

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  • November 25, 1998

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 10, 2017, 3:45 p.m.

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Klann, R. T. Determining Pu-239 content by resonance transmission analysis using a filtered reactor beam., article, November 25, 1998; Illinois. (digital.library.unt.edu/ark:/67531/metadc628106/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.