Design and fabrication of Tb3+ doped Gd2O3-WO3-SiO2 scintillating glass

Q1 Physics and Astronomy Journal of Non-Crystalline Solids: X Pub Date : 2022-09-01 DOI:10.1016/j.nocx.2022.100110

Junzhou Tang , Ziyu Lin , Degui Tu , Tianxia Wei , Rui Duan , Shifeng Zhou

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引用次数: 3

Abstract

Developing novel scintillating glass with high density and intense radioluminescence is of critical importance for various radiation-related technologies. In this paper, Tb-doped Gd₂O₃-WO₃-SiO₂ (GWS) scintillating glass was prepared and investigated. The optical and scintillation properties are explored. And the optimal concentration of Tb activators in glass excited by UV-light and X-ray is determined. Moreover, annealing glass enables a unique glass bleaching phenomenon. Benefitting from the increasement in transparency, a notable improvement in photoluminescence (~195% enhancement in intensity) and radioluminescence (~146% enhancement in intensity) could be realized. The optical and structural characterizations reveal a dramatic change of W chemical valance state from W⁵⁺ to W⁶⁺, which is supposed to govern the decoloring process. Our research indicates that Tb-doped GWS scintillating glass can be a potential candidate for X-ray monitoring.

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Tb3+掺杂Gd2O3-WO3-SiO2闪烁玻璃的设计与制备

开发高密度强辐射发光的新型闪烁玻璃对各种辐射相关技术具有重要意义。本文制备并研究了掺杂tb的Gd2O3-WO3-SiO2 (GWS)闪烁玻璃。探讨了其光学和闪烁特性。并确定了紫外光和x射线激发下玻璃中Tb活化剂的最佳浓度。此外，退火玻璃可以实现独特的玻璃漂白现象。由于透明度的增加，光致发光(强度增强~195%)和辐射致发光(强度增强~146%)可以得到显著改善。光学和结构表征表明，W的化学价态从W5+到W6+发生了剧烈的变化，这可能是控制脱色过程的原因。我们的研究表明，掺杂tb的GWS闪烁玻璃可以成为x射线监测的潜在候选者。

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