Abstract

An analysis is given of an Overhauser experiment in which the microwave power is applied as a square wave in time: in response to this square wave the observed NMR signal relaxes toward modified equilibrium levels. It is shown how T 1 of the relaxing nuclei may be determined from the cross-correlation function between the impressed microwave power and the observed NMR signal intensity. Results are given for solutions of 2,2,6,6-tetramethyl-4-oxopiperidine-l-oxyl in water.

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