Adiabatic heteronuclear decoupling in rotating solids

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In magic angle spinning solid state NMR experiments the potential of heteronuclear 1H decoupling employing a continuous train of adiabatic inversion pulses has been assessed via numerical simulations and experimental measurements. It is shown that, with a 1H RF field strength of ∼ 100 kHz that is typically available in MAS NMR probes, it is possible to achieve efficient adiabatic 1H decoupling at low magic angle spinning frequencies. It is pointed out that in the presence of H1 inhomogeneities it will be advantageous to employ adiabatic decoupling in MAS solid state NMR experiments.

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