Developing 226Ra and 227Ac age-dating techniques for nuclear forensics to gain insight from concordant and non-concordant radiochronometers
Abstract
The model age or ‘date of purification’ of a nuclear material is an important nuclear forensic signature. In this study, chemical separation and MC-ICP-MS measurement techniques were developed for 226 Ra and 227Ac: grand-daughter nuclides in the 238U and 235U decay chains respectively. The 230Th-234U, 226Ra-238U, 231Pa-235U, and 227Ac-235U radiochronometers were used to calculate model ages for CRM-U100 standard reference material and two highly-enriched pieces of uranium metal from the International Technical Working Group Round Robin 3 Exercise. In conclusion, the results demonstrate the accuracy of the 226Ra-238U and 227Ac-235U chronometers and provide information about nuclide migration during uranium processing.
- Authors:
-
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Nuclear and Chemical Sciences Division
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1241985
- Report Number(s):
- LLNL-JRNL-669502
Journal ID: ISSN 0236-5731; TRN: US1600477
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of Radioanalytical and Nuclear Chemistry
- Additional Journal Information:
- Journal Volume: 307; Journal Issue: 3; Journal ID: ISSN 0236-5731
- Publisher:
- Springer
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 11 NUCLEAR FUEL CYCLE AND RUEL MATERIALS; 07 ISOTOPES AND RADIATION SOURCES; 38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; radiochemistry; age-dating; radium, actinium; uranium; nuclear forensics
Citation Formats
Kayzar, Theresa M., and Williams, Ross W.. Developing 226Ra and 227Ac age-dating techniques for nuclear forensics to gain insight from concordant and non-concordant radiochronometers. United States: N. p., 2015.
Web. doi:10.1007/s10967-015-4435-4.
Kayzar, Theresa M., & Williams, Ross W.. Developing 226Ra and 227Ac age-dating techniques for nuclear forensics to gain insight from concordant and non-concordant radiochronometers. United States. https://doi.org/10.1007/s10967-015-4435-4
Kayzar, Theresa M., and Williams, Ross W.. Sat .
"Developing 226Ra and 227Ac age-dating techniques for nuclear forensics to gain insight from concordant and non-concordant radiochronometers". United States. https://doi.org/10.1007/s10967-015-4435-4. https://www.osti.gov/servlets/purl/1241985.
@article{osti_1241985,
title = {Developing 226Ra and 227Ac age-dating techniques for nuclear forensics to gain insight from concordant and non-concordant radiochronometers},
author = {Kayzar, Theresa M. and Williams, Ross W.},
abstractNote = {The model age or ‘date of purification’ of a nuclear material is an important nuclear forensic signature. In this study, chemical separation and MC-ICP-MS measurement techniques were developed for 226 Ra and 227Ac: grand-daughter nuclides in the 238U and 235U decay chains respectively. The 230Th-234U, 226Ra-238U, 231Pa-235U, and 227Ac-235U radiochronometers were used to calculate model ages for CRM-U100 standard reference material and two highly-enriched pieces of uranium metal from the International Technical Working Group Round Robin 3 Exercise. In conclusion, the results demonstrate the accuracy of the 226Ra-238U and 227Ac-235U chronometers and provide information about nuclide migration during uranium processing.},
doi = {10.1007/s10967-015-4435-4},
journal = {Journal of Radioanalytical and Nuclear Chemistry},
number = 3,
volume = 307,
place = {United States},
year = {Sat Sep 26 00:00:00 EDT 2015},
month = {Sat Sep 26 00:00:00 EDT 2015}
}
Web of Science
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Works referencing / citing this record:
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