Table 10:
Typical parameters for PITHIRDS-CT experiments.
| MAS rate: 20 kHz (rotor period, τr = 50 μs) | |||
|---|---|---|---|
| Pulse | Power (kHz) |
Duration (μs) | Phase |
| pH,1 (π/2) | 110 | 2.27 | y |
| pH,2 | Linear ramp: 46.67 to 93.34 | 2,000 | x |
| pC,1 | 50 | 2,000 | x,x |
| pC,2 (π)* | 30 | τr/3 = 16.67 | x,y,x,y,y,x,y,x,−x,−y,−x,−y,−x,−y,−x,−y |
| ϕReceiver | x | ||
| Delay | Duration | ||
| d1 | 2 s | ||
| Decoupling period |
Power (kHz) | Method |
|---|---|---|
| dec1 | 110 | TPPM |
| comments | *The xy-16 phase cycle is applied to pC,2. | |
| The constants k1 =4, k2 + k3 = 32, for 38.4 ms total recoupling time (57). | ||