Figure 5.

Experimental $T_2^{\text{'}}$ as a function of 1/${\nu }_0^{\mathrm{H}}$ and ${\nu }_{\mathrm{r}}$ under CW and optimised TPPM, SPINAL‐64 and XiX decoupling under faster spinning conditions than those of Figure 4. Datasets acquired using ${\nu }_1=170\mathrm{kHz}$ . Hardware configurations 2 and 5 were used (see Table 1). For ${\nu }_{\mathrm{r}}=25\mathrm{kHz}$ , CP contact times were 1.2 and 2.5 ms for configurations 2 and 5 respectively. For ${\nu }_{\mathrm{r}}=62.5\mathrm{kHz}$ , CP contact times were 1.5 and 1.2 ms for configurations 2 and 5 respectively.