Fig.1
Radiographs using a parametric X-ray radiation beam: (a) foils of copper and zinc at 9 keV; (b) integrated circuit card and aluminium step at 13.5 keV; and (c) sample slice of a human tooth at 13.5 keV. (Courtesy Y Hayakawa et al.)
International Journal of High-Energy Physics
Radiographs using a parametric X-ray radiation beam: (a) foils of copper and zinc at 9 keV; (b) integrated circuit card and aluminium step at 13.5 keV; and (c) sample slice of a human tooth at 13.5 keV. (Courtesy Y Hayakawa et al.)