Fast MAS and High Magnetic Field

For quadrupolar nuclei, i.e. nuclei with spin 1/2, an additional difficulty arises from the field-dependent shift and the line broadening by the second-order perturbation of quadrupolar interactions under the dominant Zeeman interaction [4]. MAS assists 

Satellite Transition Spectroscopy (SATRAS) [9,10] has been proven to be a useful technique to determine the NMR parameters of quadrupolar spin systems, in particular when the quadrupolar frequency Uq is so small that the structure of the central transition (CT) 1/2 —1/2 due to second-order effects is not resolved. In that case, reliable informa- 

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