NMR IMAGING OF SOLIDS BY SPIN NUTATION IN THE ROTATING-FRAME - A COMPARATIVE-ANALYSIS

The solid-state imaging methods based on Redfield′s rotary saturation theory are analyzed with respect to the signal-to-noise ratio and to the experimental options which one can choose to obtain different information. The results show that while the magic-angle rotating-frame imaging method has several degrees of freedom which allow a large variety of image manipulation possibilities, the new indirect method, which is based on the Lee-Goldburg approach, has an easier experimental setup and a better signal-to-noise ratio. A new result, obtained by means of this last method, is reported. © 1993 by Academic Press, Inc.