Fig. 3
From: Probing ultrafast foam homogenization with grating-based X-ray dark-field imaging
X-ray Transmission (a) and dark-field (b) image of proton heated foam with 90 ps delay between the short-pulse laser hitting the aluminum foil for proton acceleration and the X-rays arriving at the sample. The proton beam heating the sample is incident on the left side of the images. The angled and striped line in (a) is a result of a non-sensitive gap in the detector interfering with image reconstruction. (c) shows a lineout of the dark-field data (raw data in pale red), smoothed by a running average with a window-size of 100 μm (red). For comparison, the cold foam’s dark-field signal is plotted in orange (extracted from the area marked in (b)). A detailed description of the transmission and dark-field calculation is given in the methods section.
