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HR‐DOSY experiments with radiofrequency field gradients (RFG) and their processing according to the HD method
Author(s) -
Mouro C.,
Mutzenhardt P.,
Diter B.,
Canet D.
Publication year - 2002
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1133
Subject(s) - chemistry , diffusion , field (mathematics) , data processing , resolution (logic) , algorithm , analytical chemistry (journal) , computer science , physics , chromatography , artificial intelligence , mathematics , pure mathematics , thermodynamics , operating system
The usual method for probing translational motions is the pulsed gradient spin‐echo (PGSE) experiment introduced by Stejskal and Tanner. It employs gradients of the static magnetic field. Most of the drawbacks from which this basic experiment suffers have been successfully circumvented by several modifications and compensations. Thus, it is now possible to obtain very clean experimental results amenable to optimal data processing so that they can be presented as 2D (or 3D) diffusion ordered spectra (DOSY). In first part of this paper, it is shown that radiofrequency field gradients (RFG) are immune to the drawbacks inherent to the basic PGSE sequence, and can give clean, high‐resolution diffusion data in a straightforward manner. In the second part, an alternative data processing method for reconstructing DOSY spectra based on the Hankel diagonalization (HD) is introduced. Copyright © 2002 John Wiley & Sons, Ltd.