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Vol. 34, No. 8(3), S&M3042

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Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
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Sensors and Materials, Volume 31, Number 4(2) (2019)
Copyright(C) MYU K.K.
pp. 1249-1255
S&M1851 Research Paper of Special Issue
https://doi.org/10.18494/SAM.2019.2184
Published: April 22, 2019

Luminescence and Scintillation Properties of Eu-doped CaAl2O4 Bulk Crystals [PDF]

Daisuke Nakauchi, Noriaki Kawaguchi, and Takayuki Yanagida

(Received November 30, 2018; Accepted March 25, 2019)

Keywords: scintillator, dosimetry, photoluminescence, radioluminescence, crystal growth, afterglow

Eu-doped CaAl2O4 bulk crystals were synthesized by the floating zone (FZ) method, and their photoluminescence (PL) and scintillation properties were investigated firstly in a bulk crystal. The crystal samples exhibit PL and radioluminescence (RL) with a broad emission peaking around 440 nm as well as sharp peaks appearing around 600 nm, which are similarly observed for powder samples. Suggested from the decay time constants, they are attributed to the 5d–4f transitions of Eu2+ and the 4f–4f transitions of Eu3+, respectively. From the pulse height spectrum under 241Am γ-ray (59.5 keV) exposure, the light yield (LY) of a 3.0% Eu:CaAl2O4 bulk crystal is approximately 12000 ph/MeV.

Corresponding author: Daisuke Nakauchi


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Cite this article
Daisuke Nakauchi, Noriaki Kawaguchi, and Takayuki Yanagida, Luminescence and Scintillation Properties of Eu-doped CaAl2O4 Bulk Crystals, Sens. Mater., Vol. 31, No. 4, 2019, p. 1249-1255.



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