Time-dependent self-diffusion by NMR spin-echo
作者： Janez Stepišnik
DOI: 10.1016/0921-4526(93)90124-O
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摘要: Abstract The relation between the NMR spin-echo attenuation in magnetic field gradient and velocity autocorrelations of molecular random migration has been derived by using comulant expansion theorem for averaging stochastic processes. It may explain certain cases time-dependent diffusion observed many systems. In limit long correlation times it is identical to Torrey's well-known formula spin echo due self-diffusion. method used derive expression restricted regions.
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