Using nutation-frequency-selective pulses to reduce radio-frequency field inhomogeneity in solid-state NMR

Kathrin Aebischer, Nino Wili, Zdeněk Tošner & Matthias Ernst
Radio-frequency (rf) field inhomogeneity is a common problem in NMR which leads to non-ideal rotations of spins in parts of the sample. Often, a physical volume restriction of the sample is used to reduce the effects of rf-field inhomogeneity, especially in solid-state NMR where spacers are inserted to reduce the sample volume to the centre of the coil. We show that band-selective pulses in the spin-lock frame can be used to apply B1-field selective inversions...
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