Symmetrized Multipulse Nuclear-Magnetic-Resonance Experiments in Solids: Measurement of the Chemical-Shift Shielding Tensor in Some Compounds

Abstract
An experimental study of the properties of one form of the three-state reflection-symmetry cycle is presented. The cycle and its compensated form are used to measure the chemical shielding tensor of F19 in polytetrafluoroethylene [(C2F4)n] and P31 in powdered zinc phosphide (Zn3 P2). The effect of phase errors is discussed and the principle of phase compensation is demonstrated in a phase-alternated sequence. Amplitude-modulation effects of phase errors are also discussed.

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