铈激活硼硅酸盐闪烁玻璃的空气中合成及其闪烁性能研究

高密度Ce3+激活闪烁玻璃因具备化学组份易调、尺寸与形状（含光纤）可控、光学均匀性好、方法简单及成本低廉等优势而有望取代商用闪烁晶体，应用于高能物理工程与核医学成像等领域。但传统熔融法制备高密度Ce3+激活闪烁玻璃都需在还原气氛中进行，这将导致玻璃样品（尤其是玻璃样品放大）制备过程所需合成设备变得异常复杂，故积极开展铈激活闪烁玻璃的空气中合成及其闪烁性能研究对于新型闪烁材料的研发具有重要意义。本项目以具有竞争潜力的铈激活硼硅酸盐闪烁玻璃为研究对象，深刻揭示出玻璃组成及合成工艺对空气中合成闪烁玻璃的铈离子价态调控影响因素及其调控规律，重点探索出提高与稳定高密度硼硅酸盐玻璃中Ce3+浓度的有效方法，系统研究闪烁玻璃的能量传递及发光强度、衰减时间与余辉时间、能量分辨率、能量响应和辐照硬度等闪烁性能，研发出具有应用前景的Ce3+激活高密度硼硅酸盐闪烁玻璃品种，为推动闪烁玻璃的实际应用奠定科学基础。

Dense Ce3+-activated scintillating glass with the advantages of versatile composition, controllable size and shape, good optical homogeneity, simple synthesis and low cost is a promising candidate material for scintillating crystals, and it is of significance in the technology fields of high-energy physics engineering and nuclear-medical imaging. However, the reported dense Ce3+-activated scintillating glasses must be prepared in a reduced atmosphere, which extremely complicates the synthesizing equipments that are utilized to prepare glass samples, particularly in the large-scale glass samples. Therefore, it is of significance in research and development of novel scintillating materials to carry out systematic research on the synthesis of Ce3+-activated borosilicate scintillating glasses prepared in air atmosphere and their scintillating properties..In this project, based on the promising Ce3+-activated borosilicate glass, we will reveals in detail the crucial impact factors of glass compositions and synthesis process on the valence manipulation of cerium ions and its manipulation law. We will put more emphasis on finding out the effective methods for improving and stabilizing of the concentration of Ce3+ ions in the investigated dense borosilicate scintillating glasses. And we will systematically study the optical and scintillating properties of dense borosilicate glass such as, energy transfer and emission intensity, decay times and afterglow features, energy resolution, energy response and radiation hardness..All the above-mentioned efforts are made to develop a competitive and valuable Ce3+-activated borosilicate glass, which will pave the solid scientific way for practical application of scintillating glasses.