DAS

Dynamic-Angle Spinning (DAS) is a solid-state NMR method for obtaining a high resolution spectrum of half-integer spin quadrupolar nuclei. It was first described by Professor Alexander Pines and coworkers at UC Berkeley, and by Drs. Joseph Virlet and Antoine Llor at the CEA in Saclay, France. It is performed as a two-dimensional NMR experiment, and correlates a high resolution (isotropic) spectrum to the anisotropic central transition VAS spectrum.

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These are the two most basic DAS sequences. For additional implementation details (phase cycling and data processing), please see the references below, particularly, Grandinetti et al., J. Magn. Reson. A, 103, 72 (1993)

References and Related Resources from our Lab