Optimization of Dopants and Scintillation Fibers’ Diameter of GdAlO3/<inline-formula> <tex-math notation="LaTeX">$\alpha$ </tex-math> </inline-formula>-Al2O3 Eutectic for High-Resolution X-Ray Imaging
Optimization of Dopants and Scintillation Fibers’ Diameter of GdAlO3/<inline-formula> <tex-math notation="LaTeX">$\alpha$ </tex-math> </inline-formula>-Al2O3 Eutectic for High-Resolution X-Ray Imaging
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高分辨率 X 的 GdAlO3/<inline-formula> <tex-math notation="LaTeX">$alpha$ </tex-math> </inline-formula>-Al2O3 共晶掺杂剂和闪烁光纤直径的优化-射线成像
DOI：
10.1109/tns.2018.2841026
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发表时间：
2018
影响因子：
1.8
通讯作者：
Yoshikawa Akira
中科院分区：
文献类型：
--
作者：
Kamada Kei;Yasui Nobuhiro;Ohashi Yoshihiro;Den Toru;Yamaguchi Hiroaki;Yamaji Akihiro;Shoji Yasuhiro;Yoshisno Masao;JinKim Kyoung;Kurosawa Shunsuke;Ohashi Yuji;Yokota Yuui;Yoshikawa Akira
报道了亚微米直径的相位分离闪烁光纤（PSSFs），它们同时具有光纤的特性和辐射-光转换的特性。PSSF是使用定向凝固共晶系统制造的。可以使用PSSF开发高分辨率X射线成像。为了获得高的光输出和高的导光效率，采用微下拉法生长了Tb和Eu掺杂的GdAlO 3（GAP）/ α-Al 2 O3共晶闪烁体。研究了Eu、Tb掺杂浓度与发光强度的关系。在优化的掺杂浓度下，研究了生长速率、共晶周期结构、PSSFs直径和对比度传递函数之间的关系，以实现高分辨率X射线成像。
Submicrometer diameter phase-separated scintillator fibers (PSSFs) were reported and they possessed both the properties of an optical fiber and radiation-to-light conversion. The PSSFs were fabricated using a directionally solidified eutectic system. High-resolution X-ray imaging can be developed using the PSSFs. In this paper, Tb- and Eu-doped GdAlO3(GAP)/ α-Al2O3eutectic scintillator was grown by the micro pulling down method with various growth rates in order to achieve the high light output and the high light-guiding efficiency. Relationship between radioluminescence intensity and dopant concentration of Eu and Tb was investigated. At the optimized dopant concentration, relationship between growth rate, eutectic period structure, diameter of PSSFs, and contrast transfer function was investigated to achieve high-resolution X-ray imaging.