Table 1.
Analysis parameters for acquisition of 13C tensor data for phases of palmitic acid.
| A2 | As | Bm | C | Em | |
|---|---|---|---|---|---|
| Spinning speed (Hz) | 4000 | 4000 | 527 | 527 | 527 |
| Recycle time (s) | 25.0 | 30.0 | 20.0 | 25.0 | 23.0 |
| 1H 90° pulse (µs) | 3.1 | 4.5 | 3.9 | 3.9 | 4.2 |
| 13C 180° pulse (µs) | — | — | 8.7 | 8.7 | 9.2 |
| Evolution spectral width (kHz) | — | — | 26.9 | 26.9 | 26.9 |
| Acquisition spectral width (kHz) | 40.0 | 40.0 | 65.4 | 65.4 | 65.4 |
| Evolution digital resolution (Hz/point) | — | — | 15.9 | 15.9 | 58.6 |
| Acquisition digital resolution (Hz/point) | 78.1 | 19.5 | 15.9 | 15.9 | 26.2 |
| # evolution points | — | — | 51 | 51 | 51 |
| # scans/evol. Point | 20488 | 8132 | 576 | 576 | 576 |
| Contact time (ms) | 3.0 | 1.0 | 3.0 | 3.0 | 3.0 |
| Analysis method | CP/MAS | CP/MAS | FIREMAT | FIREMAT | FIREMAT |
| Total analysis time | 17 h | 2.8 d | 6.8 d | 8.5 d | 15.6 d |