Delayed neutron activation analysis for safeguards

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Delayed neutron activation analysis (DNAA) presents a fast, accurate, and reliable method for quantification of fissile material. The method has relatively few sources of error and may be accomplished nondestructively. The need for a fast, accurate screening of materials stems from the necessity to protect cleanroom facilities from widely varying fissile quantities in samples and from desired gains in efficiency of mass spectrometric analysis by assisting in spike level selection and by removing from the sample set those materials that are not of interest. During the last several years, many different materials have been screened or analyzed in support of international safeguards, internal process control for actinide separations, and in uranium contamination assessments. Swipes from a variety of sources have been analyzed, either before or after dissolution, and comparison of the DNAA results to mass spectrometry results is generally favorable. A facility characterization of the High Flux Isotope Reactor was performed using filter paper swipes to demonstrate the utility of the DNAA technique.

Original languageEnglish
Pages (from-to)207-211
Number of pages5
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume276
Issue number1
DOIs
StatePublished - Apr 2008

Funding

This work is sponsored by the Office of Nonproliferation and International Security (NA243 under NA-24), U.S. Dept. of Energy, under Contract DE-AC05-00OR22725 with the Oak Ridge National Laboratory, managed and operated by UT-Battelle, LLC. The submitted manuscript has been authored by a contractor of the U.S. Government under Contract No. DE-AC05-00OR22725. Accordingly, the U.S. Government retains a nonexclusive, royalty-free license to publish or reproduce the published form of this contribution, or allow others to do so, for U.S. Government purposes.

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