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

Notice of retraction
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 30, Number 7(2) (2018)
Copyright(C) MYU K.K.
pp. 1547-1554
S&M1610 Research Paper of Special Issue
https://doi.org/10.18494/SAM.2018.1919
Published: July 27, 2018

Characterizations of Ce-doped Y4Al2O9 Crystals for Scintillator Applications [PDF]

Go Okada, Masaki Akatsuka, Hiromi Kimura, Masaki Mori, Naoki Kawano, Noriaki Kawaguchi, and Takayuki Yanagida

(Received December 19, 2017; Accepted April 11, 2018)

Keywords: scintillator, Y4Al2O9, YAM, Ce3+

Ce-doped Y4Al2O9 (YAM) crystals were grown by the floating zone method, and several different characterizations were conducted for scintillator applications. Both photoluminescence (PL) and scintillation show emissions predominantly due to the 5d–4f transitions of Ce3+ over 400–600 nm. The luminescence lifetime is approximately 10 ns for PL while the scintillation decay curve is best fitted by a second-order exponential decay function with the lifetimes of approximately 30 and 300 ns. These lifetimes are faster than that for Ce:Y3Al5O12 (YAG) (~120 ns) and close to that of Ce:YAlO3 (YAP) (~30 ns). The Ce-doped YAM shows a relatively high afterglow signal induced by X-rays (2 ms pulse) possibly due to the inclusion of a large number of defect centers. Pulse height spectroscopy was demonstrated under alpha-ray irradiation, and a successful sample showed a full-energy peak.

Corresponding author: Go Okada


Cite this article
Go Okada, Masaki Akatsuka, Hiromi Kimura, Masaki Mori, Naoki Kawano, Noriaki Kawaguchi, and Takayuki Yanagida, Characterizations of Ce-doped Y4Al2O9 Crystals for Scintillator Applications, Sens. Mater., Vol. 30, No. 7, 2018, p. 1547-1554.



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