Internal mobility ratios in melts of the system (Na-Rb)NO3 have been measured with the Klemm method at various temperatures and compositions. The internal mobilities have been calculated from these and the available data on densities and conductivities. The Chemla effect has been observed. For NaNO3 concentrations > 10 mol %, the internal mobility of the Na+ ions obeys the formula bNa = [A/(V - V0)] exp(- E/RT). where V is the molar volume and V° is slightly temperature dependent. For NaNO3 concentrations < 10 mol %, bNa becomes smaller than expected from the formula. The internal mobility of the Rb+ ions also obeys such a formula at higher temperatures. At lower temperatures it in, like that of the Cs+ ions, a function of the mole fraction and independent of the kind of coions
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A Journal of Physical Sciences: Zeitschrift für Naturforschung A (ZNA) is an international scientific journal which publishes original research papers from all areas of experimental and theoretical physics. In accordance with the name of the journal, which means “Journal for Natural Sciences”, manuscripts submitted to ZNA should have a tangible connection to actual physical phenomena.