Molecular self-diffusion in internal magnetic fields of porous medium investigated by NMR MGSE method

Inhomogeneous magnetic fields generated in porous media due to differences susceptibility at solid/liquid interfaces and intrinsic or artificially doped impurities can be used gain insight into the molecular dynamics of fluid structure a medium using concept NMR modulated gradient spin echo method. We extended theory this method case an inhomogeneous field that cannot approximated by uniform gradient, order explain CPMG measurements self-diffusion water soaked ceramics, which are with different contents. The new interpretation provides relaxation times, average pore size their distribution, as well strength internal ceramics.