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Report No.

Joint validation of the in-situ uranium age dating method

Okubo, Ayako; Mayer, K.*

Under the collaboration between EC-JRC and JAEA, the in-situ age dating method was subject to joint validation, and six different uranium materialswere used for this purpose. The age dating result by in-situ isotope method was consistent with known production dates of the respective samples. The uncertainty evaluation according to GUM for the in-situ isotope method indicates that the measured $$^{234}$$Th/$$^{230}$$Th ratio provides the highest contribution. The accuracy of in-situ isotope method can be improved by higher precision in $$^{234}$$Th/$$^{230}$$Th measurement.



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