Optical and Scintillation Properties of Eu-doped CsBr–BaBr2–ZnBr2 Glasses

• Published in: Sensors and materials Vol. 34; no. 2; p. 691
• Main Authors: Kimura, Hiromi, Kato, Takumi, Nakauchi, Daisuke, Kawaguchi, Noriaki, Yanagida, Takayuki
• Format: Journal Article
• Language: English
• Published: Tokyo MYU Scientific Publishing Division 01-01-2022
• Subjects: Alpha rays; Cesium bromides; Emission; Europium; Optical properties; Photoluminescence; Scintillation
• ISSN: 0914-4935; 2435-0869
• DOI: 10.18494/SAM3687

20CsBr–20BaBr2–60ZnBr2 glasses doped with various concentrations of Eu (0.01, 0.05, 0.1, and 0.5%) were synthesized by the melt-quenching method, and their optical and scintillation properties were investigated. In the photoluminescence (PL) and X-ray-induced scintillation spectra of all the prepared glasses, the emission band around 415 nm due to the 5d–4f transitions of Eu2+ was observed. In the scintillation spectrum, the 0.5% Eu-doped glass showed sharp emission peaks at 590 and 610 nm, which have a typical spectral shape for the 4f–4f transitions of Eu3+. Under241 Am α-ray irradiation, the light yields of 0.01 and 0.05% Eu-doped glasses were 75 and 100 ph/5.5 MeV-α, respectively.