pp. 515-522
S&M3539 Research Paper of Special Issue https://doi.org/10.18494/SAM4756 Published: February 20, 2024 Scintillation Properties of Eu-doped KI Single Crystals [PDF] Keiichiro Miyazaki, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, and Takayuki Yanagida (Received October 20, 2023; Accepted January 18, 2024) Keywords: scintillator, photoluminescence, alkali halide, Bridgman–Stockbarger method, light yield
The photoluminescence and scintillation properties of KI:Eu synthesized by the vertical Bridgman–Stockbarger method were investigated. All the samples showed a broad peak at 430–450 nm under UV and X-ray irradiations, and the origin of emission was ascribed to the 4f65d1–4f7 transition of Eu2+. Furthermore, a tail emission at 500 nm under X-ray irradiation was observed, the origin of which could be ascribed to color centers associated with oxygen impurities. According to the pulse height spectra, the highest light yield (LY) under 241Am γ-ray (60 keV) irradiation was 3400 photons/MeV among the prepared samples. In terms of LY and afterglow, the optimal concentration of Eu was found to be 0.3%.
Corresponding author: Keiichiro MiyazakiThis work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Keiichiro Miyazaki, Daisuke Nakauchi, Takumi Kato, Noriaki Kawaguchi, and Takayuki Yanagida, Scintillation Properties of Eu-doped KI Single Crystals, Sens. Mater., Vol. 36, No. 2, 2024, p. 515-522. |