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Uranium ores and yellow cake samples of known geographic origin were investigated for their  n ( 236 U)/ n ( 238 U) isotope abundance ratio. Samples from four different uranium mines in Australia, Brazil and Canada were selected. Uranium was separated by UTEVA ®  Resin and was measured by Accelerator Mass Spectrometry (AMS) at the Vienna Environmental Research Accelerator (VERA). The measurement of the isotope abundance ratio  n ( 236 U)/ n ( 238 U) will be used to investigate possible correlations between the original mineral (uranium ore) and the intermediate product (yellow cake). Such correlations are useful indicators for nuclear forensic or for non-proliferation purposes.

Investigation of the 236 U/ 238 U isotope abundance ratio in uranium ores and yellow cake samples