title: High-field NMR using resistive and hybrid magnets.
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.
authors.affiliation: Center of Interdisciplinary Magnetic Resonance, National High Magnetic Field Laboratory, Tallahassee, FL 32310, USA. gan@magnet.fsu.edu
authors.forename: Zhehong
authors.initials: Z
authors.lastname: Gan
authors.forename: Hyung-Tae
authors.initials: HT
authors.lastname: Kwak
authors.forename: Mark
authors.initials: M
authors.lastname: Bird
authors.forename: Timothy
authors.initials: T
authors.lastname: Cross
authors.forename: Peter
authors.initials: P
authors.lastname: Gor'kov
authors.forename: William
authors.initials: W
authors.lastname: Brey
authors.forename: Kiran
authors.initials: K
authors.lastname: Shetty
mesh_terms: D017097:Electric Impedance; D004581:Electronics / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation* / Q000379:methods; D008280:Magnetics / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014159:Transducers