title: NMR shift and relaxation measurements in pulsed high-field magnets up to 58T.
abstract: Nuclear magnetic resonance (NMR) experiments at fields up to 58T in pulsed magnets at the Dresden High Magnetic Field Laboratory are reported. The challenge to resolve NMR shifts in these time-dependent fields is addressed for the first time, and it is shown that this can indeed be accomplished with high precision with an internal reference. As a result, signal averaging is possible during a single magnetic field pulse, but also for multiple pulses. Thus, even very weak signals can in principle be recorded and their shifts can be determined. In a second set of experiments, the measurement of nuclear relaxation is investigated. Using adiabatic inversion with the inherent time dependence of the magnetic field and small-angle inspection, it is shown that relaxation measurements are possible, as well. The shift experiments were performed with (27)Al NMR on a mixture of aluminum metal and a Linde type A zeolite. For the relaxation studies, (27)Al NMR and (69)Ga NMR on the metals aluminum and gallium were preformed, respectively.
authors.affiliation: University of Leipzig, Faculty of Physics and Earth Sciences, Linnéstraße 5, 04103 Leipzig, Germany. Electronic address: kohlrautz@physik.uni-leipzig.de.
authors.forename: J
authors.initials: J
authors.lastname: Kohlrautz
authors.affiliation: University of Leipzig, Faculty of Physics and Earth Sciences, Linnéstraße 5, 04103 Leipzig, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Reichardt
authors.affiliation: Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany.
authors.forename: E L
authors.initials: EL
authors.lastname: Green
authors.affiliation: Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Kühne
authors.affiliation: Dresden High Magnetic Field Laboratory (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01314 Dresden, Germany; Institut für Festkörperphysik, TU Dresden, 01062 Dresden, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Wosnitza
authors.affiliation: University of Leipzig, Faculty of Physics and Earth Sciences, Linnéstraße 5, 04103 Leipzig, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Haase
keywords: NMR; Pulsed high field; Relaxation; Shift