Decay of multiple quantum NMR coherences in quasi-one-dimensional chains in calcium fluorapatite
https://doi.org/10.26907/mrsej-19106
Abstract
Multiple quantum (MQ) nuclear magnetic resonance (NMR) experiment is considered on chains of fluorine atoms in calcium fluorapatite. The second moments of the line shapes of the MQ coherences on the evolution period of the MQ NMR experiment are calculated analytically in the approximation of nearest neighbor interactions. The calculated values are used for a description of the experimental data with semi-phenomenological formulas assuming that the relaxation of the MQ coherences follows the Gaussian law on the evolution period. A satisfactory agreement with the experimental data is demonstrated.
Keywords
multiple quantum NMR,
multiple quantum coherence,
relaxation,
dipole-dipole interactions,
zz model,
second moments
Supporting agencies: This work is supported by Russian Foundation for Basic Research (grant No. 16-03-00056) and the Program of the Presidium of RAS No. 5 \Electron spin resonance, spin-dependent electron effects and spin technologies".
About the Authors
G. A. Bochkin
Institute of Problems of Chemical Physics of Russian Academy of Sciences
Russian Federation
Russian Federation
142432 Chernogolovka
E. B. Fel'dman
Institute of Problems of Chemical Physics of Russian Academy of Sciences
Russian Federation
Russian Federation
142432 Chernogolovka
I. D. Lazarev
Institute of Problems of Chemical Physics of Russian Academy of Sciences; Faculty of Fundamental Physical-Chemical Engineering, Lomonosov Moscow State University
Russian Federation
Russian Federation
142432 Chernogolovka; GSP-1, 119991 Moscow
S. G. Vasil'ev
Institute of Problems of Chemical Physics of Russian Academy of Sciences
Russian Federation
Russian Federation
142432 Chernogolovka
V. I. Volkov
Institute of Problems of Chemical Physics of Russian Academy of Sciences
Russian Federation
Russian Federation
142432 Chernogolovka
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Review
For citations:
Bochkin G.A., Fel'dman E.B., Lazarev I.D., Vasil'ev S.G., Volkov V.I. Decay of multiple quantum NMR coherences in quasi-one-dimensional chains in calcium fluorapatite. Magnetic Resonance in Solids. 2019;21(1):19106 (5 pp.). https://doi.org/10.26907/mrsej-19106
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