Figure 7.

a) Experimental $T_2^{\text{'}}$ and simulated $T_2^{\mathrm{c}}$ across TPPM parameter map cross‐sections at $\varphi =5^{\circ }$ , using T3 MAS (red) and BioMAS probes (blue), hardware configurations 6 and 7 respectively (see Table 1). Datasets were acquired using ${\nu }_{\mathrm{r}}=12\mathrm{kHz}$ , ${\nu }_1=93\mathrm{kHz}$ and ${\nu }_0^{\mathrm{H}}=500\mathrm{MHz}$ , with a CP contact time of 2 ms. A small mis‐calibration of the ${\nu }_1$ by 2 kHz for the T3 probe dataset has been taken into account when calculating the tip‐angle, $\theta$ . b) Experimental $T_2^{\text{'}}$ decay curves under optimal TPPM decoupling, corresponding to the peaks in (a). Solid lines represent fits to a mono‐exponential decay, with the decay constant shown in the legend.