Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf

The first Nuclear Magnetic Resonance (NMR) experiments at the Helmholtz-Zentrum Dresden-Rossendorf in pulsed high magnetic fields that peak at maximum flux-density up to 62 Tesla are described. The temporal properties of the magnetic field B(t) in the vicinity of the field maximum are characterized using 1H and 2H NMR single-pulse excitation. The error in B(t) is smaller than 0.1 ppm, which allows making precise predictions concerning the initial and time evolution of the NMR signal’s phase near the field maximum. We demonstrate that the various free induction decays that are excited near a single field pulse maximum, e.g., during 25 milliseconds, can be demodulated from the intrinsic time dependence and corrected for the initial phase making signal-averaging possible in pulsed fields.