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Communication Dans Un Congrès Année : 2017

Low-power broadband NMR of paramagnetic materials at 111 kHz-MAS

Résumé

For the first time we report better performance of a low-power single-sideband-selective (S3AP) pulse than a high-power (ω1 > ωR) broadband pulse under ultrafast MAS conditions, and that these pulses are easily implemented. We show that the inefficiency of the high-power pulse comes from the inability of ultrafast MAS probes to deliver sufficiently large RF fields. For spins with large anisotropies (Ω > ωR), we extend the S3AP pulse to irradiate multiple sidebands simultaneously and show that this can improve both the pulse efficiency and the accuracy of the observed spinning sideband pattern.
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Dates et versions

hal-01577307 , version 1 (25-08-2017)

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  • HAL Id : hal-01577307 , version 1

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Kevin J Sanders, Andrew J. Pell, Sebastian Wegner, Guido Pintacuda. Low-power broadband NMR of paramagnetic materials at 111 kHz-MAS. ISMAR 2017 - 20th ISMAR meeting & the Rocky Mountain Conference on EPR, ISMAR, Jul 2017, Québec, Canada. ⟨hal-01577307⟩
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