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Cross-correlations in multispin relaxation

Kumar, Anil and Madhu, PK (1996) Cross-correlations in multispin relaxation. In: Concepts in Magnetic Resonance, 8 (2). pp. 139-160.

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Whenever there is more than one mechanism for the relaxation of a spin, there can be cross-terms between these mechanisms. These cross-terms, known as cross-correlations affect both the longitudinal and the transverse relaxation of a spin, as well as the nuclear Overhauser effect (NOE) to the other spins. The major effect of these cross-terms is a differential effect, also known as multiplet effect between various transitions of a spin. The detection of the multiplet effect therefore requires that the various transitions be resolved by J-coupling. A smaller effect is a second-order net effect, which also can influence the various relaxation measurements. This article is a pedagogic review of cross-correlation effects in longitudinal and transverse relaxation and NOE experiments. Representative experiments demonstrating the presence of cross-correlation in the longitudinal and transverse relaxation of a spin are also discussed.

Item Type: Journal Article
Publication: Concepts in Magnetic Resonance
Publisher: John Wiley & Sons, Inc
Additional Information: The copyright belongs to John Wiley & Sons, Inc
Keywords: multispin relaxation;cross-terms;cross correlations;overhauser effect;multiplet
Department/Centre: Division of Chemical Sciences > Sophisticated Instruments Facility (Continued as NMR Research Centre)
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 26 Sep 2005
Last Modified: 27 Aug 2008 11:29
URI: http://eprints.iisc.ac.in/id/eprint/3727

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