Off-Resonance Multiple-Pulse Dynamics in Solid-State NMR Spectroscopy: A Revised Coherent Averaging Theory Analysis
✍ Scribed by Herman Cho
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 279 KB
- Volume
- 141
- Category
- Article
- ISSN
- 1090-7807
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✦ Synopsis
The standard coherent averaging theory treatment of the resonance offset interaction is compared to exact calculations for multiple-pulse solid-state NMR experiments. Significant differences between coherent averaging approximations and exact results are revealed, even for idealized conditions. A revision of the standard analysis is proposed as a way of improving the description of the off-resonance dynamics in these experiments. We use the insights obtained from this investigation to derive a qualitatively new type of homonuclear decoupling sequence, and evaluate the performance and advantages of this sequence with both simulations and experimental tests.