Resonance condition diffusion coefficient

According to Eqs. (4)-(6), the molecular mean square displacements and thus the self-diffusion coefficients may be determined from the slope of a semilogarithmic plot of the PFG NMR signal F versus (Sg) The observation time of self-diffusion is the separation between the two field gradient pulses, t. Owing to their relatively large gyromagnetic ratio and to their natural abundance of 1, protons provide very suitable conditions for NMR self-diffusion studies, but C 44), F 45), and Xe 46-48) resonances have also been used successfully in recent PFG NMR studies of zeolites. 

The resonant interactions in the scroll ring force its expansion. As the difference in the diffusion constants of the activator and the inhibitor is decreased, the coefficients 7 and 7 grow and the rate of collapse of the scroll ring decreases. It vanishes when the condition... 

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