Abstract
Praseodymium activated lutetium aluminum garnet (LuAG:Pr) is an inorganic scintillator belonging to the garnet family of crystals. It is characterized by an emission related to the radiative and allowed 5 d 1 4 f 1 → 4 f 2 transition in trivalent praseodymium ions. It has been shown that it has good scintillation qualities such as light output, energy resolution and fast decay times. There have been attempts to enhance the already good properties of LuAG:Pr such as optimizing annealing conditions, since this material has a potential to be used in Positron Emission Tomography (PET) detector systems. Previously reported studies show that there have been successful cases of improving the light yield and energy resolution. In this paper we show a detailed study of the non-proportionality and energy resolution in LuAG:Pr crystals that have been modified by partially substituting lutetium with yttrium and introducing intentional trace amounts of molybdenum co-doping. The measurements have been performed with varied shaping times to study the influence of long decay components on the scintillation parameters.
Published Version
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