A novel chronometry technique for dating irradiated uranium fuels using Cm isotopic ratios

A novel chronometry technique for dating irradiated uranium fuels using Cm isotopic ratios

A novel chronometry method is developed to date irradiated nuclear fuels. It is based on the measurement of two Cm isotopic ratios ( 244 Cm/ 246 Cm and 245 Cm/ 246 Cm) and does not require the addition of a yield tracer. The method relies on the decay of 244 Cm while the 245 Cm/ 246 Cm ratio is cons...

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Veröffentlicht in:Journal of radioanalytical and nuclear chemistry 2019-12, Vol.322 (3), p.1611-1620
Hauptverfasser: Christl, Marcus, Guérin, Nicolas, Totland, Marina, Gagné, Alexandre, Kazi, Zakir, Burrell, Sean, Synal, Hans-Arno
Format: Artikel
Sprache:eng
Schlagworte:
Chemistry
Chemistry and Materials Science
Dating techniques
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Irradiation
Isotopes
Measuring instruments
Methods
Nuclear Chemistry
Nuclear energy
Nuclear engineering
Nuclear fuels
Nuclear industry
Nuclear Physics
Physical Chemistry
Radioactive substances
Tracers (Biology)
Uranium
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Zusammenfassung:A novel chronometry method is developed to date irradiated nuclear fuels. It is based on the measurement of two Cm isotopic ratios ( 244 Cm/ 246 Cm and 245 Cm/ 246 Cm) and does not require the addition of a yield tracer. The method relies on the decay of 244 Cm while the 245 Cm/ 246 Cm ratio is considered constant after irradiation. Feasibility is demonstrated using different types of irradiated fuels with known irradiation history. A precision of 5 year is reached so far but clear potential for improvement has been identified. The novel chronometry method represents a promising alternative to existing dating techniques for nuclear materials.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-019-06767-4