MULTIPLE-QUANTUM PULSED GRADIENT NMR DIFFUSION EXPERIMENTS ON QUADRUPOLAR (I-GREATER-THAN-1 2) SPINS/

Authors
VANDAM L ANDREASSON B NORDENSKIOLD L
Citation
L. Vandam et al., MULTIPLE-QUANTUM PULSED GRADIENT NMR DIFFUSION EXPERIMENTS ON QUADRUPOLAR (I-GREATER-THAN-1 2) SPINS/, Chemical physics letters, 262(6), 1996, pp. 737-743
Citations number
18
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics letters → ACNP
ISSN journal
00092614
Volume
262
Issue
6
Year of publication
1996
Pages
737 - 743
Database
ISI
SICI code
0009-2614(1996)262:6<737:MPGNDE>2.0.ZU;2-P
Abstract
The implementation of the multiple-quantum (MQ) versions of the PGSE a nd LED pulsed field-gradient NMR diffusion experiments is described fo r the coherence order 21 for isolated quadrupolar (spin I) nuclei in a nisotropic systems. The MQPGSE and MQLED experiments are capable of me asuring slow diffusion accurately, the latter also in the case of fast transverse relaxation. Signal-to-noise ratios are discussed, and the methods are experimentally demonstrated for Li-7(+) (J = 3/2) in an or iented sample of DNA fibers.