An evaluation of various pulse sequences for the suppression of acoustic ringing in oxygen-17 NMR

Abstract
Several pulse sequences were examined for their ability to reduce the effects of acoustic ringing in 17O NMR. Both the three-pulse sequence and the extended spin-echo sequence gave satisfactory results when the phases of the pulses were appropriately cycled; however, large offset effects due to finite pulse power were introduced. The efficiency of the extended spin-echo sequence for solvent peak suppression is evaluated. The difficulties in recording extremely broad oxygen resonances ( ) and the limits of their detectability are discussed.

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