Effect of Eu-doping on optical and scintillation properties of CaCl2 transparent ceramics

This study delves into the effects of Eu-doping on the optical and scintillation properties of CaCl2 transparent ceramics, a promising alternative to single crystals for radiation detection. The research highlights the fabrication process using spark plasma sintering, which allows for rapid densification and control of grain growth. Key findings include the observation of blue luminescence in Eu-doped samples, the identification of emission peaks at 430 nm and 610 nm, and the determination of photoluminescence quantum yields and decay times. The study also explores the scintillation properties, including the suppression of self-trapped exciton emission and the achievement of a light yield of 400 ph/5.5 MeV in 1.0% Eu-doped samples. The results suggest that further improvements in energy transportation efficiency could enhance the light yield, making Eu-doped CaCl2 transparent ceramics a viable option for α-particle detection in various applications.