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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 21, Number 2
BKCSDE 21(2)
February 20, 2000 

Analysis of the Quadrupolar Coupling Effect on the Line Intensities Using Single-Crystal Nutation NMR in α-Al2O3 Crystals
Ae Ja Woo, Duk-Young Han, So Hyun Cho
With 1D-nutation NMR for a spin I = 5/2 system, the relative line intensities of the central and the inner- and outer-satellite transitions are calculated as functions of quadrupolar coupling wQ and rf pulse strength wrf. Experimentally measured line intensities including both central and satellites are used to extract the values of шQ and шrf from nonlinear least-squares fits. The method is illustrated in a-Al2O3 crystals (ruby and corundum) with the single-crystal 27 Al nutation NMR spectra. As a result, the new feature that the rf pulse strength shows reduced effect on the satellite transition lines according to the quadrupolar coupling is discussed by using a fictitious spin-1/2 operator.
233 - 237
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