Figure 7
Two-dimensional scatter plot of the energy ECSA of the coincidence events (m = 2), between the pixels 5 and 8, after CSA. The energy ECSA is plotted versus the charge-sharing ratio R, which gives information about the interaction position of the events. The shift of the track to lower energies than 59.5 keV (blue line) is due to charge losses near the inter-pixel region. The two kinks at R = ±0.22 are due to the escape of the fluorescent X-rays of the CZT material (e.g. the Cd Kα1 fluorescent line is characterized by an energy of 23.2 keV). |