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Rotor Synchronization of Radiofrequency and Gradient Pulses in High-Resolution Magic Angle Spinning NMR

✍ Scribed by Jean-Michel Wieruszeski; Gérard Montagne; Gianni Chessari; Pierre Rousselot-Pailley; Guy Lippens

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
161 KB
Volume
152
Category
Article
ISSN
1090-7807

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✦ Synopsis

We have investigated the extent to which rotor synchronization of radiofrequency pulses leads to spectral improvement in highresolution magic angle spinning NMR experiments. Several pulse sequences were tested, and the effect was found to be maximal in homonuclear TOCSY spectra. The physicochemical nature of the sample plays a role in the phenomenon, as rotor synchronization allows the refocusing of residual anisotropic interactions. However, even in a liquid sample the effects were visible. Radial inhomogeneities of the radiofrequency field were identified as an important source of the problem.

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✍ Andrew S. Zektzer; Mark G. Swanson; Samson Jarso; Sarah J. Nelson; Daniel B. Vig 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 484 KB

## Abstract A rotor‐synchronized WURST‐8 adiabatic pulse scheme was compared to the conventional MLEV‐17 hard pulse scheme for isotropic mixing in total correlation spectroscopy (TOCSY) studies of intact human prostate tissues under high‐resolution magic angle spinning (HR‐MAS) conditions. Both mix