Fig. 9

a X-ray phase contrast absorption image, showing part of the red iron oxide cross on the top layer of papyrus. b X-ray phase contrast image of the same acquisition as a, but processed to show the scatter width
a X-ray phase contrast absorption image, showing part of the red iron oxide cross on the top layer of papyrus. b X-ray phase contrast image of the same acquisition as a, but processed to show the scatter width