Tracer ZLC measurements

First tracer ZLC measurements [113], however, are in contrast to this finding. In these studies, tracer exchange is found to be rather fast, so that there is no indication of single-file behavior. Moreover, it appears that the (transport) diffusivities resulting from ZLC measurements are in complete agreement with the concentration dependence of the (self-) diffusivities resulting from... 

Fig. 1. Schematic diagram of system for vapor phase ZLC or tracer ZLC measurements. 

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