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  • Title: High-field NMR using resistive and hybrid magnets.
    Author: Gan Z, Kwak HT, Bird M, Cross T, Gor'kov P, Brey W, Shetty K.
    Journal: J Magn Reson; 2008 Mar; 191(1):135-40. PubMed ID: 18226940.
    Abstract:
    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 40T. 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.
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