We have performed the proton NMR measurements of H2O and ethylbenzene (C6H5–CH2–CH3) using the superconducting magnet operating at 21.6 T (920 MHz for proton) in the persistent mode. It is found that both homogeneity and stability of the magnet have a specification sufficient for a high resolution NMR.
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Hashi et al. (2002) studied this question.
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