Figure 6
Variation of speckle contrast with photon energy (q = 1.02 × 10−2 nm−1 and L = 31 m). Points are measured values, continuous lines are theoretical prediction by equation (4) for the ESRF-EBS and former ESRF third-generation (3rd gen) storage ring. The inset shows the coherent photon flux available at the sample position with the EBS using different undulators. |