Analysis of americium-beryllium neutron source composition using the FRAM code

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The FRAM code was originally developed to analyze high-resolution gamma spectra from plutonium items. Its capabilities have since been expanded to include analysis of uranium spectra. The flexibility of the software also enables a capable spectroscopist to use FRAM to analyze spectra in which neither plutonium nor uranium is present in significant amounts. This paper documents the use of FRAM to determine the {sup 239}Pu/{sup 241}Am, {sup 243}Am/{sup 241}Am, {sup 237}Np/{sup 241}Am, and {sup 239}Np/{sup 241}Am ratios in americium-beryllium neutron sources. The effective specific power of each neutron source was calculated from the ratios determined by FRAM in order to ... continued below

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7 p. :

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Hypes, P. A. (Philip A.); Bracken, D. S. (David S.); Sampson, Thomas E. & Taylor, W. A. (Wayne A.) January 1, 2002.

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Description

The FRAM code was originally developed to analyze high-resolution gamma spectra from plutonium items. Its capabilities have since been expanded to include analysis of uranium spectra. The flexibility of the software also enables a capable spectroscopist to use FRAM to analyze spectra in which neither plutonium nor uranium is present in significant amounts. This paper documents the use of FRAM to determine the {sup 239}Pu/{sup 241}Am, {sup 243}Am/{sup 241}Am, {sup 237}Np/{sup 241}Am, and {sup 239}Np/{sup 241}Am ratios in americium-beryllium neutron sources. The effective specific power of each neutron source was calculated from the ratios determined by FRAM in order to determine the americium mass of each of these neutron sources using calorimetric assay. We will also discuss the use of FRAM for the general case of isotopic analysis of nonplutonium, nonuranium items.

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7 p. :

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  • Presented at the Institute of Nuclear Materials Management, 43rd Annual Meeting, Orlando, FL, June 23-27, 2002

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  • Report No.: LA-UR-02-2529
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 976165
  • Archival Resource Key: ark:/67531/metadc927031

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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, 2002

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  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 9, 2016, 10:36 p.m.

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Hypes, P. A. (Philip A.); Bracken, D. S. (David S.); Sampson, Thomas E. & Taylor, W. A. (Wayne A.). Analysis of americium-beryllium neutron source composition using the FRAM code, article, January 1, 2002; United States. (digital.library.unt.edu/ark:/67531/metadc927031/: accessed November 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.