CRAMPS: High-Resolution NMR of High-γ Nuclei in Solids

被引：0
作者：
Gerstein, Bernard C. [1 ]
机构：
[1] Iowa State University, Ames, IA
来源：
eMagRes | 2009年 / 2009卷
关键词：
D O I：
10.1002/9780470034590.emrstm0100.pub2
中图分类号：
学科分类号：
摘要：
The theoretical and experimental considerations leading to high-resolution NMR of protons and other relatively high-γ nuclei (e.g., 19F) are treated. Coherent averaging of internal interactions, specifically homogeneous dipolar coupling via excitations by radiofrequency pulses, and shielding anisotropy by sample spinning are described. The requirements of spectrometer probes and receivers are discussed. Tuning of the spectrometer to minimize transients due to time-dependent excitations and determination of scaling factors under various pulse sequences are treated. Experimental results under CRAMPS and under Variable Cycle Time Cramps (VCT CRAMPS) are presented. Recent developments including homonuclear decoupling by continuous phase modulation (DUMBO and SAM n ) are presented. © 2009 John Wiley & Sons, Ltd.
引用
收藏
相关论文
共 44 条
  • [1] Taylor R. E., Pembleton R. G., Ryan L. M., Gerstein B. C., J. Chem. Phys, 71, (1979)
  • [2] Amoureux J.-P., Pruski M., Advances in MQMAS NMR, Encyclopedia of Nuclear Magnetic Resonance, Advances in NMR, 9, pp. 226-251, (2002)
  • [3] Ashbrook S., Duer M., Concepts in Magnetic Resonance, Part A, pp. 183-248, (2006)
  • [4] Haeberlen U., High resolution in solids
  • [5] selective averaging, supplement I, Advances in Magnetic Resonance, (1976)
  • [6] Gerstein B. C., Dybowski C. R., Transient Techniques in NMR of Solids
  • [7] An Introduction to the Theory and Practice, (1986)
  • [8] Gerstein B. C., CRAMPS, in The Encyclopedia of NMR, 3, pp. 1501-1508, (1996)
  • [9] Burum D. P., Rhim W.-K., J. Chem. Phys, 71, (1979)
  • [10] Lowe I. J., Bull. Am. Phys. Soc, 2, (1957)
12345