Figure 6.

¹H nutation spectra measured through ¹³C using T3 MAS and BioMAS probes, hardware configurations 6 and 7 respectively (see Table 1). Peak nutation frequencies are at ${\nu }_1=93\mathrm{kHz}$ . Spectra acquired at ${\nu }_{\mathrm{r}}=12\mathrm{kHz}$ and ${\nu }_0^{\mathrm{H}}=500\mathrm{MHz}$ using CP conditions with 1.2 ms contact time.