Gamma-ray isotopic analysis of plutonium within highly attenuating shipping containers

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Description

Isotopic measurements of items stored in shielded shipping containers presents a challenge to standard, nondestructive high-resolution gamma spectroscopy analysis. For example, some plutonium oxide material that will be shipped from Rocky Flats will be packaged in a combination of containers that places more than 12 mm of lead and 25 mm of steel between the material and the detector. This shielding effectively eliminates gamma rays below approximately 300 keV. Spectra were taken through simulated containers and analyzed using FRAM version 4.0 and a parameter set developed for use with highly attenuated items. The results indicate that 10% precision in measured ... continued below

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6 p.

Creation Information

Hypes, P. A. (Philip A.); Mercer, D. J. (David J.) & Dinwiddie, D. R. (Derek R.) January 1, 2001.

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Description

Isotopic measurements of items stored in shielded shipping containers presents a challenge to standard, nondestructive high-resolution gamma spectroscopy analysis. For example, some plutonium oxide material that will be shipped from Rocky Flats will be packaged in a combination of containers that places more than 12 mm of lead and 25 mm of steel between the material and the detector. This shielding effectively eliminates gamma rays below approximately 300 keV. Spectra were taken through simulated containers and analyzed using FRAM version 4.0 and a parameter set developed for use with highly attenuated items. The results indicate that 10% precision in measured {sup 240}Pu content should be achievable with 2-hour measurements.

Physical Description

6 p.

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  • Submitted to: Institute of Nuclear Materials Management, 42nd Annual Meeting, Indian Wells, CA, July 15-19, 2001

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  • Report No.: LA-UR-01-3510
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 975595
  • Archival Resource Key: ark:/67531/metadc928020

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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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Creation Date

  • January 1, 2001

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 9, 2016, 11:33 p.m.

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Hypes, P. A. (Philip A.); Mercer, D. J. (David J.) & Dinwiddie, D. R. (Derek R.). Gamma-ray isotopic analysis of plutonium within highly attenuating shipping containers, article, January 1, 2001; United States. (digital.library.unt.edu/ark:/67531/metadc928020/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.