Figure 3
Transmission X-ray images through beryllium foils obtained at the 1 km beamline of SPring-8 at a wavelength of 0.1 nm: (a) powder foil (PF-60) of 250 µm thickness, (b) ingot foil (IF-1) of 250 µm thickness, and (c) PVD foil of 100 µm thickness. The distance between the beryllium foils and the detector is 1.4 m. (d) Calculated Fresnel diffraction patterns from spherical voids with diameters of 3, 5, 10 and 15 µm. |