FIELD-CYCLING NMR RELAXOMETRY OF LIQUIDS CONFINED IN POROUS-GLASS - EVIDENCE FOR LEVY-WALKS

Authors
STAPF S KIMMICH R SEITTER RO
Citation
S. Stapf et al., FIELD-CYCLING NMR RELAXOMETRY OF LIQUIDS CONFINED IN POROUS-GLASS - EVIDENCE FOR LEVY-WALKS, Magnetic resonance imaging, 14(7-8), 1996, pp. 841-846
Citations number
7
Categorie Soggetti
Radiology,Nuclear Medicine & Medical Imaging
Journal title
Magnetic resonance imaging → ACNP
ISSN journal
0730725X
Volume
14
Issue
7-8
Year of publication
1996
Pages
841 - 846
Database
ISI
SICI code
0730-725X(1996)14:7-8<841:FNROLC>2.0.ZU;2-5
Abstract
The frequency dependence of the longitudinal relaxation time T-1(nu) o f different liquids confined to microporous glass features a distinct difference between polar and nonpolar adsorbates, This finding is expl ained by ''weak'' and ''strong'' adsorption, respectively. The T-1 dis persion of polar adsorbates can be described with the aid of Levy walk statistics of ''bulk-mediated surface diffusion'' recently suggested by Bychuk and O'Shaughnessy (J. Chem, Phys, 101:772-780; 1994) Copyrig ht (C) 1996 Elsevier Science Inc.