Calculations of stimulated echoes and two-dimensional nuclear magnetic resonance spectra for solids with simple line shapes
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Date
2008-03-20
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American Institute of Physics
Abstract
Nuclear magnetic resonance (NMR) experiments on ion conductors often yield rather unstructured spectra, which are hard to interpret if the relation between the actual translational motion of the mobile species and the changes of the NMR frequencies is not known. In order to facilitate a general analysis of experiments on solids with such spectra, different models for the stochastic evolution of the NMR frequencies are considered. The treated models involve random frequency jumps, diffusive evolutions, or approximately fixed frequency jumps. Two-dimensional nuclear magnetic resonance spectra as well as stimulated-echo functions for the study of slow and ultraslow translational dynamics are calculated for Gaussian equilibrium line shapes. The results are compared with corresponding ones from rotational models and with experimental data.
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Keywords
Gaussian processes, ionic conductivity, nuclear magnetic resonance, spectral line breadth, spin echo (NMR)
Citation
Geil, B.; Diezemann, G.; Böhmer, R.: Calculations of stimulated echoes and two-dimensional nuclear magnetic resonance spectra for solids with simple line shapes. In: Journal of Chemical Physics Jg. 128(2008), 114506/1-12, doi: 10.1063/1.2838623.