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Isotope fractionation in AgI super-ionic conductor by centrifugation

Ono, Masao ; Okayasu, Satoru ; Iguchi, Yusuke*; Esaka, Fumitaka ; Ishitsuka, Etsuo  ; Osawa, Takahito ; Ogata, Yudai; Mashimo, Tsutomu*

We are investigating the isotope fractionation in solid or liquid under strong centrifugal acceleration field. In this study, we have performed the ultracentrifuge experiments on $$alpha$$ -AgI super ionic conductor samples. All centrifuged samples keep their stoichiometry. The isotope ratio of $$^{107}$$Ag / $$^{109}$$Ag on centrifuged samples have negative gradient in the direction of centrifugal force. These results show that the heavy $$^{109}$$Ag isotopes move in the direction of the centrifugal force and the light isotopes move in the counter direction keeping their charge balance in the specimen. Additionally, I will introduce the development of isotope separation process in liquid based on this result.

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