NMR measurement of the magnetic field correlation function in porous media.
The structure factor provides a fundamental characterization of porous and granular materials as it is the key for solid crystals via measurements of x-ray and neutron scattering. Here, we demonstrate that the structure factor of the granular and porous media can be approximated by the pair correlation function of the inhomogeneous internal magnetic field, which arises from the susceptibility difference between the pore filling liquid and the solid matrix. In-depth understanding of the internal field is likely to contribute to further development of techniques to study porous and granular media.
Cho
H
H
Schlumberger-Doll Research, One Hampshire Street, Cambridge, Massachusetts 02139, USA.
Song
Yi-Qiao
YQ
D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D019906:Nuclear Magnetic Resonance, Biomolecular / Q000379:methods