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The model dates of two enriched uranium materials were determined using a new method for nuclear forensics investigation. In this method, without spike addition, the 230Th/234U ratio was calculated from… Click to show full abstract
The model dates of two enriched uranium materials were determined using a new method for nuclear forensics investigation. In this method, without spike addition, the 230Th/234U ratio was calculated from the measured ratios of 230Th/234Th and 234U/238U and from calculated 234Th/238U ratio in secular equilibrium. The model date obtained for the low-enriched uranium material was in agreement with the known production date. For the highly enriched uranium material, a more recent model date than the known production date was obtained. The 234U interference on 234Th counting in thermal ionization mass spectrometer measurement was suspected as a potential cause.
Journal Title: Journal of Radioanalytical and Nuclear Chemistry
Year Published: 2017
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