pp. 1241-1248
S&M1850 Research Paper of Special Issue https://doi.org/10.18494/SAM.2019.2183 Published: April 22, 2019 Photoluminescence and Scintillation Properties of Rb2CeCl5 Crystal [PDF] Yutaka Fujimoto, Keiichiro Saeki, Daisuke Nakauchi, Takayuki Yanagida, Masanori Koshimizu, and Keisuke Asai (Received November 30, 2018; Accepted March 25, 2019) Keywords: photoluminescence, scintillators, chloride, Ce3+ 5d-4f transitions
A new Rb2CeCl5-based crystalline scintillator was grown by the vertical Bridgman–Stockbarger method for application in X-ray and gamma-ray detection. In the X-ray diffraction (XRD) analysis, most peaks of the grown crystal were in good agreement with the database of Rb2CeCl5, whereas a few peaks of Rb3CeCl6 were also identified. The photoluminescence and scintillation properties of a Rb2CeCl5 crystal were studied under excitation by UV light, X-rays, and γ-rays. The photoluminescence and scintillation spectra showed an emission band peak at 370 nm, with a shoulder at around 350 nm, which was assigned to the 5d1–4f (2F5/2, 2F7/2) allowed transitions of Ce3+. The calculated scintillation decay time constants were approximately 24 and 153 ns. The scintillation light yield reached 36000 photons/MeV with an energy resolution of 15% at 662 keV.
Corresponding author: Yutaka FujimotoThis work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Yutaka Fujimoto, Keiichiro Saeki, Daisuke Nakauchi, Takayuki Yanagida, Masanori Koshimizu, and Keisuke Asai, Photoluminescence and Scintillation Properties of Rb2CeCl5 Crystal, Sens. Mater., Vol. 31, No. 4, 2019, p. 1241-1248. |