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An efficient eigenfunction approach to calculate spin-echo signals in heterogeneous porous media

Matias Nordin (Institutionen för kemi- och bioteknik, Teknisk ytkemi) ; D. Grebenkov ; M. N. Jacobi ; M. Nyden
Microporous and Mesoporous Materials (1387-1811). Vol. 178 (2013), p. 7-10.
[Artikel, refereegranskad vetenskaplig]

An approximate method for solving the Bloch-Torrey equation by surface integrals is developed. The method presents a fast means for calculating pulsed-gradient spin-echo nuclear magnetic resonance signals in porous systems, and it is especially efficient when the surface-to-volume ratio is low. The number of operations for retrieving echo decays scale as O(k(2)), where k is the number of surface elements. The theory is numerically validated for pulsed-gradient spin-echo sequences on two-dimensional and three-dimensional examples.

Nyckelord: NMR, Diffusion, Laplace operator, Eigenvalues, Eigenfunctions

Denna post skapades 2013-09-02.
CPL Pubid: 182593


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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Teknisk ytkemi (2005-2014)


Yt- och kolloidkemi

Chalmers infrastruktur