A direct transform for the nuclear magnetic resonance chemical shift anisotropy

A direct transform of the NMR chemical shift anisotropy, operating on data acquired under magic angle spinning conditions, yielding rotationally invar iant quantities, is potentially a source of increased resolution in solid s tate NMR. The mathematical basis for such a transform is discussed by explo iting an analogy with projection reconstruction. A specific example of the kind of pulse sequence required is given, and optimal sampling of the data is discussed. (C) 1999 American Institute of Physics. [S0021-9606(99)00911- 3].