Abstract

Measurements of Soret coefficients of tin alloys have been performed in the MFA-067 experiment of the automatic retrievable satellite EURECA. They complete the set of measurements performed in tin dilute alloys in microgravity manned laboratories. They allow also for an accurate determination of the isotopic thermomigration and for a better evaluation of the accuracy of microgravity measurements of the thermodiffusion factors. These data are compared to nonequilibrium condensed matter theories. A reasonable agreement has been obtained with the revised Enskog theory, and no electronic contribution could be identified.

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