Table 3. Evaluation of the average S/N [equation (1)] from five captures with 100 ms exposure time compared with the calculated smooth GNOM curve. ‘11× att.’ refers to experiments with the beam attenuated by a 25 µm-thick molybdenum attenuator.
| q range (qL–qH) (Å−1) | NET | |||||
|---|---|---|---|---|---|---|
| 0.05–0.09 | 0.09–0.14 | 0.14–0.24 | 0.24–0.32 | 0.05–0.32 | ||
| MMPAD | 11× att. | 21.2 | 17.6 | 5.8 | 0.56 | 10.1 |
| MMPAD (filtered) | 11× att. | 28.4 | 24.9 | 7.7 | 0.87 | 13.2 |
| CCD (full-chip) | 11× att. | 22.5 | 19.4 | 5.1 | 0.47 | 10.5 |
| CCD (cut) | 11× att. | 11.3 | 10.8 | 3.1 | 0.51 | 5.9 |
| MMPAD | No att. | 75.1 | 60.3 | 23.7 | 4.0 | 38.3 |
| MMPAD (filtered) | No att. | 107.2 | 74.3 | 32.6 | 5.1 | 50.5 |
| CCD (full-chip) | No att. | 147.2 | 110.9 | 35.4 | 7.6 | 68.3 |
| CCD (cut) | No att. | 63.8 | 48.1 | 17.9 | 3.0 | 30.6 |