Multiple quantum NMR of interacting equivalent spins
Abstract
A theory of multiple quantum (MQ) NMR dynamics is developed for systems of interacting equivalent spins (s=1/2). The theory can be applied for the interpretation of both MQ NMR spectra of bullvalene molecules dissolved in nematic liquid crystal solution and MQ NMR of nanopores in an external magnetic field. Numerical realization of the developed approach allows us to investigate MQ NMR dynamics in systems consisting of several hundred spins. The dependence of the MQ NMR coherence intensities on their orders (the profile of MQ coherence) is investigated in many-spin systems. It is shown that the profile is exponential in such systems. We discuss the information which can be extracted from MQ NMR spectra of systems of interacting equivalent spins.
Supporting agencies: The work was supported by the Program of the Presidium of RAS No. 27 “Foundations of fundamental investigations of nanotechnologies and nanomaterials”.
About the Authors
A. V. Fedorova
Institute of Problems of Chemical Physics of RAS
Russian Federation
Russian Federation
N.N. Semenov av. 1, Chernogolovka 142432
E. B. Fel'dman
Institute of Problems of Chemical Physics of RAS
Russian Federation
Russian Federation
N.N. Semenov av. 1, Chernogolovka 142432
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Review
For citations:
Fedorova A.V., Fel'dman E.B. Multiple quantum NMR of interacting equivalent spins. Magnetic Resonance in Solids. 2009;11(2):24-28.
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