Thermoluminescence Properties for X-ray of Cr-doped Al2O3 Ceramics
Thermoluminescence Properties for X-ray of Cr-doped Al2O3 Ceramics
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DOI：
10.18494/sam.2018.1928
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发表时间：
2018-01-01
影响因子：
1.2
通讯作者：
Andoh, Takayuki
中科院分区：
文献类型：
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作者：
Shinsho, Kiyomitsu;Maruyama, Daiki;Andoh, Takayuki
研究了cr掺杂低熔点Al2O3的基本热释光（TL）特性。本研究中Cr2O3的浓度范围为0.01 ~ 1.0 wt%。由于Cr的加入使捕获态稳定，我们成功地改善了Al2O3的低熔点褪色性能。然后，0.05 wt% cr掺杂的Al2O3对x射线的灵敏度比未掺杂的Al2O3高约4.8倍，使Al2O3保持其对x射线的吸引力。此外，0.05 wt% cr掺杂的Al2O3具有高TL灵敏度、高再现性、高辐射电阻率和高二维热稳定性，具有良好的剂量学性能。最后，我们展示了使用掺铬Al2O3陶瓷板的放射治疗（RT）计划的二维（2D）验证。结果与RT方案吻合较好。
We investigated the basic thermoluminescence (TL) characteristics of Cr-doped low-melting-point 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 low-melting-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.