Mitra, P. P., Sen, P. N. (1992) Effects of surface relaxation on NMR pulsed field gradient experiments in porous media. Physica A: Statistical Mechanics and its Applications, 186 (1-2). pp. 109-114. ISSN 03784371 (ISSN)
Abstract
We derive an expression for the magnetization M(k,t) in a pulsed fiield gradient spin echo (PFGSE) experiment for spins diffusing in a restricted geometry with relaxation at the pore walls. Exact solutions for a slab, and simple considerations for a periodic pore geometry show that the normalized amplitude M(k,t,p)/M(0, t,p) depends only weakly on the surface relaxivity p for small p. This suggests a 'factorization' that for small p, Mp(k,t) ≈ Mp(0,t) Mp=0(k,t). This factorization is useful in understanding PFGSE experiments, because Mp=0(k,t) is theoretically simpler to analyze, and is related to the structure of the pore space. © 1992.
| Item Type: | Paper |
|---|---|
| Subjects: | Investigative techniques and equipment > magnetic resonance imaging physics physics > biophysics > pore dynamics |
| CSHL Authors: | |
| Communities: | CSHL labs > Mitra lab |
| Depositing User: | CSHL Librarian |
| Date: | 1992 |
| Date Deposited: | 02 Apr 2012 20:20 |
| Last Modified: | 10 Feb 2017 20:49 |
| URI: | https://repository.cshl.edu/id/eprint/25863 |
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