Novel optical-guiding crystal scintillator composed of an Eu-doped SrI2 core and glass cladding
Novel optical-guiding crystal scintillator composed of an Eu-doped SrI2 core and glass cladding
复制标题
由Eu掺杂SrI2核和玻璃包层组成的新型光导晶体闪烁体
DOI：
10.1016/j.ceramint.2022.12.264
复制
发表时间：
2023
影响因子：
5.2
通讯作者：
Yoshika
中科院分区：
文献类型：
--
作者：
Yajima Ryuga;Kamada Kei;Takizawa Yui;Kutsuzawa Naoko;Sasaki Rei;Yoshino Masao;Horiai Takahiko;Murakami Rikito;Kim Kyoung Jin;Kochurikhin Vladimir V.;Yamaji Akihiro;Kurosawa Shunsuke;Yokota Yuui;Sato Hiroki;Toyoda Satoshi;Ohashi Yuji;Takashi Hanada;Yoshika
闪烁体不仅用作辐射探测系统中的单晶，还用作阵列、柱和光纤。在这项研究中，使用Eu:SrI2晶体作为核心和硼硅酸盐玻璃作为包层制造了一种新型光导晶体闪烁体（OCS）。 OCS具有细长的形状，可以像光纤一样灵活加工。此外，由于采用无机闪烁体晶体作为核心，因此与塑料闪烁体不同，OCS对高能辐射（例如γ射线和X射线辐射）具有高灵敏度。在这项研究中，通过观察所制造的OCS的横截面，识别晶体结构，并研究X射线照射下的辐射发光光谱，确认了OCS的制造符合OCS设计规范，并且保持了SrI2晶体结构和Eu2+5d-4f发光。还研究了 γ 射线响应，例如光输出和衰减时间。
Scintillators are used not only as single crystals in radiation detection systems but also as arrays, columns, and fibers. In this study, a novel optical-guiding crystal scintillator (OCS) was fabricated using an Eu:SrI2crystal as the core and borosilicate glass as the cladding. The OCS has an elongated shape and can be flexibly processed like an optical fiber. Furthermore, because inorganic scintillator crystals are used as the core, the OCS has high sensitivity to high-energy radiation, such as γ- and X-ray radiation, unlike plastic scintillators. In this study, by observing the cross section of the fabricated OCS, identifying the crystal structure, and investigating the radioluminescence spectrum under X-ray irradiation, OCS fabrication in accordance with the OCS design specifications was confirmed, and the SrI2crystal structure and Eu2+5d–4f luminescence were maintained. The γ-ray responses, such as light yield and decay time, were also investigated.