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Corrections to the cross-polarization dynamics in solids. The effect of nonsecular terms of heteronuclear dipolar interaction on cross-relaxation.

作者信息

Ding S, Ye C

机构信息

Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics, Chinese Academy of Sciences.

出版信息

Solid State Nucl Magn Reson. 1993 Mar;1(6):321-8. doi: 10.1016/0926-2040(93)90014-e.

DOI:10.1016/0926-2040(93)90014-e
PMID:7834307
Abstract

The dynamic theory of cross-polarization in solids is modified by considering the contribution of the nonsecular terms of the heteronuclear dipolar interaction Hamiltonian in the laboratory frame to cross-relaxation. This contribution is evaluated numerically and confirmed experimentally. It is shown that these nonsecular terms may play a considerable role in cross-relaxation in many systems, especially in those with fast internal molecular motion. The complication in the cross-polarization process is further revealed.

摘要

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