Figure 4
ToT spectrum. After setting a threshold at 100 ns ToT, two contributions are visible: the first one at around 300 ns ToT, which we attribute mainly to the 6.4 keV K-α fluorescence energy of Fe, and a second one at around 1100 ns ToT, which we attribute to the scattered photons at 14.4 keV. We set an arbitrary cut-off energy at 650 ns ToT and split all events into these two distributions. |