Abstract

The effects of nonzero radio-frequency pulse widths on the echo signals in solids with molecular motions have been investigated. It has been shown that in the slow-motion region a time position and an amplitude of the echo signal depend not only on the width of the pulse, but also on the shape of potential wells and the correlation time, describing the molecular motion. A comparison of the developed theory with experimental results obtained for polycrystalline NH 4Cl demonstrates a good agreement between them.

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