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

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Sensors and Materials
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Sensors and Materials, Volume 30, Number 7(2) (2018)
Copyright(C) MYU K.K.
pp. 1591-1598
S&M1615 Research Paper of Special Issue
https://doi.org/10.18494/SAM.2018.1928
Published: July 27, 2018

Thermoluminescence Properties for X-ray of Cr-doped Al2O3 Ceramics [PDF]

Kiyomitsu Shinsho, Daiki Maruyama, Shin Yanagisawa, Yusuke Koba, Mizuki Kakuta, Kazuki Matsumoto, Hiroaki Ushiba, and Takayuki Andoh

(Received January 28, 2018; Accepted May 25, 2018)

Keywords: thermoluminescent phosphor, Al2O3, glow curve, two-dimensional dosimeter

We investigated the basic thermoluminescence (TL) characteristics of Cr-doped low-meltingpoint Al2O3. The concentration of Cr2O3 in this study ranged from 0.01 to 1.0 wt%. Owing to the stabilization of the trapped state caused by Cr doping, we successfully improved the lowmelting- point Al2O3 fading property dramatically. Then, the sensitivity of 0.05 wt% Cr-doped Al2O3 to X-rays was about 4.8 times higher than that of the nondoped Al2O3, allowing the Al2O3 to maintain its attractive properties to X-rays. Furthermore, the 0.05 wt% Cr-doped Al2O3 had good properties for dosimetry owing to its high TL sensitivity, high reproducibility, high radiation resistivity, and high thermal stability in two dimensions. Finally, we demonstrated two-dimensional (2D) verifications of radiotherapy (RT) plans using Cr-doped Al2O3 ceramic plates. The results had good agreement with RT plans.

Corresponding author: Kiyomitsu Shinsho


Cite this article
Kiyomitsu Shinsho, Daiki Maruyama, Shin Yanagisawa, Yusuke Koba, Mizuki Kakuta, Kazuki Matsumoto, Hiroaki Ushiba, and Takayuki Andoh, Thermoluminescence Properties for X-ray of Cr-doped Al2O3 Ceramics, Sens. Mater., Vol. 30, No. 7, 2018, p. 1591-1598.



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