NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Probing porous media with gas diffusion NMRWe show that gas diffusion nuclear magnetic resonance (GD-NMR) provides a powerful technique for probing the structure of porous media. In random packs of glass beads, using both laser-polarized and thermally polarized xenon gas, we find that GD-NMR can accurately measure the pore space surface-area-to-volume ratio, S/V rho, and the tortuosity, alpha (the latter quantity being directly related to the system's transport properties). We also show that GD-NMR provides a good measure of the tortuosity of sandstone and complex carbonate rocks.
Document ID
20040088791
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
Authors
Mair, R. W.
(Harvard-Smithsonian Center for Astrophysics Cambridge, Massachusetts 02138, United States)
Wong, G. P.
Hoffmann, D.
Hurlimann, M. D.
Patz, S.
Schwartz, L. M.
Walsworth, R. L.
Date Acquired
August 21, 2013
Publication Date
October 18, 1999
Publication Information
Publication: Physical review letters
Volume: 83
Issue: 16
ISSN: 0031-9007
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: NAG5-4920
CONTRACT_GRANT: BES-9612237
CONTRACT_GRANT: NAGW-5025
Distribution Limits
Public
Copyright
Other
Keywords
NASA Discipline Environmental Health
Non-NASA Center

Available Downloads

There are no available downloads for this record.
No Preview Available