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Strategies for solid-state NMR in high-field Bitter and hybrid magnets

✍ Scribed by P.J.M van Bentum; J.C Maan; J.W.M van Os; A.P.M Kentgens

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
231 KB
Volume
376
Category
Article
ISSN
0009-2614

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✦ Synopsis

Strategies for successful solid-state NMR experiments in high-field Bitter and hybrid magnets are discussed and implemented on an older generation 24 T system. In general, the stability and homogeneity of this type of magnets do not meet the requirements for most NMR experiments. Nevertheless, we will show that a new type of shimming with ferromagnetic inserts, combined with feedback control of the power-supply and NMR reference deconvolution can be used to obtain well-resolved solid-state NMR spectra. We will demonstrate that this approach is especially useful for the study of half-integer quadrupolar nuclei. Experimental results include static and Magic Angle Spinning (MAS) 27 Al NMR spectra of the minerals sillimanite and andalusite.

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