Plutonium measurements by accelerator mass spectrometry at LLNL

McAninch, J E; Hamilton, T F; Broan, T A; Jokela, T A; Knezovich, T J; Ognibene, T J; Proctor, I D; Roberts, M L; Southon, J R; Vogel, J S; Sideras-Haddad, E

doi:10.1016/S0168-583X(00)00091-4

Title: Plutonium measurements by accelerator mass spectrometry at LLNL

Conference · Tue Oct 26 00:00:00 EDT 1999

DOI:https://doi.org/10.1016/S0168-583X(00)00091-4· OSTI ID:757321

McAninch, J E; Hamilton, T F; Broan, T A; Jokela, T A; Knezovich, T J; Ognibene, T J; Proctor, I D; Roberts, M L; Southon, J R; Vogel, J S; Sideras-Haddad, E

Mass spectrometric methods provide sensitive, routine, and cost-effective analyses of long-lived radionuclides. Here the authors report on the status of work at Lawrence Livermore National Laboratory (LLNL) to develop a capability for actinide measurements by accelerator mass spectrometry (AMS) to take advantage of the high potential of AMS for rejection of interferences. This work demonstrates that the LLNL AMS spectrometer is well-suited for providing high sensitivity, robust, high throughput measurements of plutonium concentrations and isotope ratios. Present backgrounds are {approximately}2 x 10{sup 7}atoms per sample for environmental samples prepared using standard alpha spectrometry protocols. Recent measurements of {sup 239+240}Pu and {sup 241}Pu activities and {sup 240}Pu/{sup 239}Pu isotope ratios in IAEA reference materials agree well with IAEA reference values and with alpha spectrometry and recently published ICP-MS results. Ongoing upgrades of the AMS spectrometer are expected to reduce backgrounds below 1 x 10{sup 6} atoms per sample while allowing simplifications of the sample preparation chemistry. These simplifications will lead to lower per-sample costs, higher throughput, faster turn around and, ultimately, to larger and more robust data sets.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE Office of Defense Programs (DP) (US)

DOE Contract Number:: W-7405-ENG-48

OSTI ID:: 757321

Report Number(s):: UCRL-JC-134179; YN0100000; 98-ERD-100; R&D Project: LDRD; YN0100000; 98-ERD-100; TRN: US0004178

Resource Relation:: Journal Volume: 172; Journal Issue: 1-4; Conference: 8th International Conference on Accelerator Mass Spectrometry, Vienna (AT), 09/06/1999--09/10/1999; Other Information: PBD: 26 Oct 1999

Country of Publication:: United States

Language:: English

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Title: Plutonium measurements by accelerator mass spectrometry at LLNL

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