Isotope Distribution in Pure Indium after Liquid-State Centrifugation

Int. J. Microgravity Sci. Appl. 2011_s089
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An ultracentrifuge experiment was performed on a pure liquid-indium at centrifugal acceleration field of 8.2x105 g at 300℃ for 100 hours. The isotope ratio measurements were performed on the centrifuged specimen, which was cooled and solidified before release the acceleration, with Secondary Ion Mass Spectrometer (CAMECA IMS-6f). 113In/115In isotope ratio on the specimen changed with negative gradient in the direction of centrifugal acceleration approximately 1.4%. The measurement result indicated that the heavy 115In isotopes moved in the direction of the centrifugal acceleration and the light 113In isotopes moved in the counter direction in the specimen.
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