Isotope effect in AgI super-ionic conductor by centrifugation

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. It was confirmed that the centrifuged specimen kept its stoichiometry by the analysis using Electron Probe Micro Analyzer and micro-area X-Ray Diffractometer. The isotope ratio measurements on the centrifuged specimen were performed using Secondary Ion Mass Spectrometer (CAMECAIMS-6f). The isotope ratio of $^{107}$ Ag/ $^{109}$ Ag on the specimen changed with negative gradient in the direction of centrifugal force approximately 1.5%. These observation results 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 their charge balance in the specimen.

Language	:	English
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Meeting title	:	29th International symposium on Space Technology and Science (29th ISTS)
Held date	:	2013/06
Location (city)	:	Nagoya
Location (country)	:	Japan
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Registration No. : BB20130866
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