Effect of Mg~（2+） codoping on cathodoluminescence properties of Ce~（3+） activated GGAG single crystals

摘要

High R&D activity in the field of inorganic scintillators used for ionizing radiation detection has been triggered mainly by the pressing needs of modern medical imaging, high energy physics, homeland security and environmental applications [1]. Recently, a new material concept was defined based on multicomponent (Gd, RE)3(Ga,Al)5O12 host, RE=Y, Lu. Doped with Ce3+ and admixture with balanced Gd and Ga content host compositions showed amazingly high light yield up to 58 000 photons/MeV [2]. More recently, a strategy based on co-doping with alkali earth AE2+ into Ce3+ activated YAG [3], LuAG [5] or GGAG [5] single crystal garnet scintillators significantly improved some scintillation characteristics.