Abstract
We demonstrate that an ion beam analysis method that detects the energies of forward recoiling deuterons can be used to measure concentration profiles and tracer diffusion coefficients D* of a deuterated polymer (d-polystyrene) diffusing into its hydrogenated analog. The D*’s decrease as M−2 as predicted by the reptation theory of polymer diffusion and agree in magnitude with both the theory and marker displacement measurements of D* in the same system.
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