MGA2 (Multiple Group Analysis): A one-detector code for rapid high-precision plutonium isotopic measurements

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The MGA (Multiple Group Analysis) code which we developed several years ago required two detectors when analyzing high SU Pu content samples. The isotopic information, which was obtained from the 300-keV regions, can now be obtained equally well from the low-energy region (50 to 208 keV). This breakthrough was achieved by developing a unique and highly accurate method for delineating the overall ''intrinsic'' efficiency curve, including the plutonium K-shell absorption edge discontinuity. Consequently, the intense 129- and 148-keV peak intensities can now be used reliably in place of the peaks in the 300-keV regions to determine the relative abundances of ... continued below

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Pages: 8

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Gunnink, R. July 1, 1987.

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The MGA (Multiple Group Analysis) code which we developed several years ago required two detectors when analyzing high SU Pu content samples. The isotopic information, which was obtained from the 300-keV regions, can now be obtained equally well from the low-energy region (50 to 208 keV). This breakthrough was achieved by developing a unique and highly accurate method for delineating the overall ''intrinsic'' efficiency curve, including the plutonium K-shell absorption edge discontinuity. Consequently, the intense 129- and 148-keV peak intensities can now be used reliably in place of the peaks in the 300-keV regions to determine the relative abundances of STZPu and SU Pu. The 203/208- and 148/152-keV pairs, and all of the intense 94- to 104-keV peaks, are included in the analysis to provide accurate data for the other isotopes of interest.

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Pages: 8

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NTIS, PC A02; 3.

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  • 28. INMM annual meeting on safeguards: a mature technology, Newport Beach, CA, USA, 12 Jul 1987

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  • Other: DE87012627
  • Report No.: UCRL-96016-Rev.1
  • Report No.: CONF-870713-33-Rev.1
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 6426375
  • Archival Resource Key: ark:/67531/metadc1212874

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Office of Scientific & Technical Information Technical Reports

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  • July 1, 1987

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  • July 5, 2018, 11:11 p.m.

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  • Sept. 4, 2018, 6:11 p.m.

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Gunnink, R. MGA2 (Multiple Group Analysis): A one-detector code for rapid high-precision plutonium isotopic measurements, article, July 1, 1987; United States. (digital.library.unt.edu/ark:/67531/metadc1212874/: accessed December 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.