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VOLUME 86 (2007) | ISSUE 1 | PAGE 26
Dipolar temperature and Multiple Quantum NMR Dynamics in Dipolar Ordered Spin Systems
PACS: 76.20.+q, 82.56.Jn
Abstract
We investigate analytically and numerically the Multiple Quantum (MQ) NMR dynamics in systems of nuclear spins 1/2 coupled by the dipole-dipole interactions in the case of the dipolar ordered initial state. We suggest a new method of MQ NMR based on the measurement of the dipolar temperature in the quasi-equilibrium state which establishes after the time of order ωloc-1 (ωloc is the dipolar local field) after the MQ NMR experiment. Many-spin clusters and correlations are created faster in such experiment than in the usual MQ NMR experiments and can be used for the investigation of many-spin dynamics of nuclear spins in solids.