Scintillation light yields of Ce-doped BaO-SiO2-P2O5 glasses synthesized by the melt-quenching method

Abstract

In this study, we synthesized BaO-SiO₂-P₂O₅ glasses doped with 5.0, 10, 15, and 20 % Ce by a melt-quenching method and investigated XRD patterns, transmittance spectra, photoluminescence properties, and scintillation properties. The 5.0–15 % samples were transparent and colorless, while the 20 % sample was colored yellow. All samples indicated only a halo peak, which is characteristic of an amorphous. The absorption originated from the 4f-5d transitions of Ce³⁺, and the charge transfer of O^2--Ce⁴⁺ was observed at 280–310 and 250–370 nm, respectively. Photoluminescence of the 5d-4f transitions of Ce³⁺ was detected in all samples, and the 5.0–15 % samples showed high quantum yields of 86–90 %. As a result of measurements of scintillation properties, the 15 % sample indicated the highest light yield of 685 photons/MeV and an energy resolution of 21 %.