Figure 8
Results of a microscale line scanning (position steps of 10 µm) between the centres of two adjacent pixels (pixels No. 5 and No. 8) at energy below (25 keV) the K-shell absorption energy of CZT material. Photopeak centroids and multiplicity m for the (a), (b) 1 mm-thick and (c), (d) 2 mm-thick detectors. (a) The jump discontinuities present in the curves for peak centroid values around 4 keV are due to the non-zero energy threshold (3 keV). |