NON-DESTRUCTIVE ASSAY OF CE-144 IN PRESENCE OF TRANSURANIC WASTE

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The Ce- 144 isotope has been identified as a radionuclide produced in certain Los Alamos National Laboratory plutonium waste streams and thus may need to be quantified when present in reportable quantities for shipment to the Waste Isolation Pilot Plant (WIPP). The most intense gamma ray from Ce-144 was found to be the 133.53 keV peak. At this energy, there were no interfering plutonium or plutonium daughter gainma rays. Furthermore, it was determined that there were no interferences produced by Ce- 144 or its progenies that could degrade the plutonium isotopic analysis. At 5% of the total activity per gram ... continued below

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8 p.

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Laboratory, Los Alamos National January 1, 2001.

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Description

The Ce- 144 isotope has been identified as a radionuclide produced in certain Los Alamos National Laboratory plutonium waste streams and thus may need to be quantified when present in reportable quantities for shipment to the Waste Isolation Pilot Plant (WIPP). The most intense gamma ray from Ce-144 was found to be the 133.53 keV peak. At this energy, there were no interfering plutonium or plutonium daughter gainma rays. Furthermore, it was determined that there were no interferences produced by Ce- 144 or its progenies that could degrade the plutonium isotopic analysis. At 5% of the total activity per gram of plutonium, the reportable limit, the Ce-144 peak at 133.53 keV will remain above the primary plutonium peak (129.3 keV) for approximately 7 years and remain quantifiable for at least 12 to 13 years from the time the isotope was chemically separated. It is therefore concluded that Ce-144 will be quantifiable whenever it exceeds 5% of the total activity per gram of plutonium, and will not interfere with the non-destructive assay of plutonium isotopic compositions.

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8 p.

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  • Submitted to: 42 Annual Meeting of the Institute of Nuclear Materials Management, INMM, Northbrook, IL

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  • Report No.: LA-UR-01-3240
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 975543
  • Archival Resource Key: ark:/67531/metadc926680

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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.

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  • January 1, 2001

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 12, 2016, 4:29 p.m.

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Laboratory, Los Alamos National. NON-DESTRUCTIVE ASSAY OF CE-144 IN PRESENCE OF TRANSURANIC WASTE, article, January 1, 2001; United States. (digital.library.unt.edu/ark:/67531/metadc926680/: accessed November 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.