Table 4. Coherence properties in the focus of the beamline P10 at PETRA III calculated for different apertures in front of the lens.
Horizontal | Vertical | |||
---|---|---|---|---|
Aperture size (µm) | 25 | 100 | 50 | 150 |
Total aperture size Ω (µm) | 25 | 93 | 49 | 128 |
Focus size (µm) | 1.4 | 1.0 | 0.6 | 0.3 |
Transverse coherence length (µm) | 3.3 | 0.6 | 4.5 | 0.9 |
Global degree of coherence | 0.76 | 0.30 | 0.97 | 0.85 |
Depth of focus (mm) | 120 | 22 | 25 | 3.6 |