3.3. Non-proportionality of light yield and intrinsic energy resolution versus energy
The non-proportionality curve for LaCl3:Ce and NaI(Tl) is shown in Fig. 5. The non-proportionality is defined here as the phe number yield measured at a specific γ-ray energy relative to the phe number yield of the 662 keV γ-peak. LaCl3:Ce is clearly superior to NaI(Tl) in terms of non-proportionality.