High-field NMR using resistive and hybrid magnets

被引：36

作者：

Gan, Zhehong ^{[1
]}

Kwak, Hyung-Tae ^{[1
]}

Bird, Mark ^{[1
]}

Cross, Timothy ^{[1
]}

Gor'kov, Peter ^{[1
]}

Brey, William ^{[1
]}

Shetty, Kiran ^{[1
]}

机构：

[1] Natl High Magnet Field Lab, Ctr Interdisciplinary Magnet Resonance, Tallahassee, FL 32310 USA

来源：

JOURNAL OF MAGNETIC RESONANCE | 2008年 / 191卷 / 01期

基金：

美国国家科学基金会;

关键词：

resistive; hybrid magnet; high field; high resolution; MAS; ferromagnetic shim; field homogeneity; stability; HENPEC; NHMFL;

D O I：

10.1016/j.jmr.2007.12.008

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

Resistive and resistive-superconducting hybrid magnets can generate dc magnetic fields much higher than conventional superconducting NMR magnets but the field spatial homogeneity and temporal stability are usually not sufficient for high-resolution NMR experiments. Hardware and technique development addressing these issues are presented for high-resolution NMR at magnetic fields up to 40 T. Passive ferromagnetic shimming and magic-angle spinning are used effectively to reduce the broadening from inhomogeneous magnetic field. A phase correction technique based on simultaneous heteronuclear detection is developed to compensate magnetic field fluctuations to achieve high spectral resolution. (C) 2008 Elsevier Inc. All rights reserved.

引用

页码：135 / 140

页数：6

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