Abstract
In this paper, it is shown how free induction decay signals recorded in the Earth’s magnetic field from water protons confined in porous media can be used to derive transversal relaxation times (T 2) and their distributions. After T 2 determination of six sintered glass samples with various pore sizes, the common theoretical model can be fitted to the data set. The T 2 distribution of water protons in a bimodal porous system is analyzed and compared to mercury porosimetry results. The implications for the calculation of pore sizes and pore size distributions of porous media by this method are discussed.
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