Figure 12
Microscale line scanning (position steps of 12.5 µm) between the centres of two adjacent pixels (pixels 5 and 6) at energies below (25 keV) and above (40 keV) the K-shell absorption energy of CZT material. Photopeak centroids, (a) and (c), and multiplicity m, (b) and (d), at various positions. The jump discontinuities visible in the curves for peak centroid values around 5 keV are caused by the non-zero energy threshold (4 keV). |