Figure 5

(a) Schematic configuration of the stacking foils inside the sample structure. (b) Detailed arrangement of the samples stacked in the order of Al foils and Zn pellets, followed by the energy degraders, i.e., thick Al foils. A collimator with a 10 mm diameter hole was followed by the stacked samples, whose diameter were 13 mm. The thickness of the foils in the illustration were depicted to be greater that their actual thickness for clarity.