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Published February 1, 1972 | public
Journal Article Open

NMR line narrowing by means of rotary spin echoes


The dipolar broadened F19 resonance line in Teflon has been narrowed by irradiating the solid with strong continuous rf magnetic fields under magic-angle conditions. The transverse magnetization in the rotating frame lost under the action of rf and dc magnetic field inhomogeneities has been recovered by means of rotary spin echoes produced by dc magnetic field pulses. The variation of the longitudinal relaxation with direction and strength of the effective magnetic field in this compound has also been measured.

Additional Information

©1972 The American Physical Society. Received 4 August 1971. Work supported by the University of North Carolina Materials Research Center under Contract No. SD-100 from the Advanced Research Projects Agency.


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