Figure 8
Microscale line scanning (10 µm position steps) between the centres of two adjacent pixels (pixels 5 and 8) at energies below (25 keV) and above (40 keV) the K-shell absorption energy of CZT material. (a) and (c) Photopeak centroids and (b) and (d) multiplicity m at various beam positions. The jump discontinuities visible in the curves for peak centroid values around 6 keV are the result of the non-zero energy threshold (4 keV). |