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NMR Imaging and the Electric Quadrupole Interaction in Solid Materials

Published online by Cambridge University Press:  21 February 2011

B. H. Suits
B. H. Suits*
Affiliation:
Physics Department, Michigan Technological University, Houghton, MI 49931
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Abstract

Nuclei with a spin, 1 > 1/2, possess a nuclear quadrupole moment which can couple to the electric field gradients in a material. They can be static, leading to NMR frequency shifts, or dynamic, which can influence relaxation times. In either case, an NMR image can be made which is sensitized to changes in the electric quadrupole interaction to provide a sensitive measure of the macroscopic spatial dependence of the microscopic changes in the material. Several examples are presented. Special considerations need to be given in the case when the strength of the Zeeman interaction between the nucleus and the magnetic field and/or the rf field is small compared to the electric quadrupole interaction.

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References

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