Abstract
In our work, we will explore the possibility of implementing the well-known Carr–Purcell–Meiboom–Gill pulse sequence to determine the pore size of porous ceramics with magnetic impurities. The proposed approach exploits the diffusion dependence of the spin-echo signal in the presence of internal gradients occurring as a result of susceptibility contrast between the porous matrix and the confined liquid. For calibrating the technique, a comparison of the pore size data with those extracted from the so-called DDIF technique (DDIF, decay due to diffusion in the internal fields) is performed. This approach can be applied for nondestructive in situ characterization of soils, concrete, biological tissues or other structures with micrometer pore size.
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This work was supported by a grant of the Romanian National Authority for Scientific Research, CNCS, UEFISCDI, project number PN-II-ID-PCE-2011-3-0238.
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Muncaci, S., Ardelean, I. Probing the Pore Size of Porous Ceramics with Controlled Amount of Magnetic Impurities via Diffusion Effects on the CPMG Technique. Appl Magn Reson 44, 837–848 (2013). https://doi.org/10.1007/s00723-013-0454-x
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DOI: https://doi.org/10.1007/s00723-013-0454-x