Ag isotope fractionation in a centrifuged -AgI super-ionic conductor

Ono, Masao ; Okayasu, Satoru ; Iguchi, Yusuke*; Esaka, Fumitaka ; Bagum, R.*; Haruki, Rie; Mashimo, Tsutomu*

The ultracentrifuge experiment was performed on an -AgI super-ionic conductor at acceleration field of 6.110 $^{5}$ g at 220 $^{circ}$ C for 100 hours. From the analysis using Electron Probe Micro Analyzer (EPMA) and micro-area X-Ray Diffractometer, it was confirmed that the centrifuged specimen kept its stoichiometry. The isotope ratio measurements were performed on the centrifuged specimen with Secondary Ion Mass Spectrometer (SIMS). $^{107}$ Ag/ $^{109}$ Ag isotope ratio on the specimen changed with negative gradient in the direction of centrifugal force approximately 1.5%. These observations indicated that the heavy $^{109}$ Ag isotopes moved in the direction of the centrifugal force and the light $^{107}$ Ag isotopes moved in the counter direction keeping charge balance in the specimen.

Language	:	English
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Meeting title	:	6th International Conference on Diffusion in Solids and Liquids (DSL 2010)
Held date	:	2010/07
Location (city)	:	Paris
Location (country)	:	France
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Cooperating Institute	:	熊本大学

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Registration No. : BB20100627
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