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Report No.

The Determination of uranium ratios in individual environmental particles

Tomita, Ryohei ; Esaka, Fumitaka ; Miyamoto, Yutaka  

In the previous study, we developed a combination method of particle manipulation and secondary ion mass spectrometry (SIMS) for removing the interferences from other elements in other particles. Since the particles were selected randomly and manipulated, it caused the problem not to cover the range of $$^{235}$$U/$$^{238}$$U isotope ratio in the sample. In this study, we improved the procedure of analyzing uranium isotope ratios in individual particles by SIMS to cover the range of $$^{235}$$U/$$^{238}$$U in the sample.



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