Fig. 4: {1H}13C NMR spectra of 5 mM sucrose in D2O recorded (as throughout this paper) at 14.1 T using the indicated overall acquisition times.

FT-NMR data was recorded using ≈50° excitation pulses, 0.6 sec acquisition times and no recovery delay (Ernst angle acquisition conditions for a T1 ≈ 1.5 sec). PI-SSFP used NS = 200 scans, TR = 30 ms and M = 12. Shown for each experiment is the SNRt for the strongest peak in the spectrum vs noise from the (peakless) 110-140 ppm range.