Abstract The paper presents study results of structural and optical changes in heavy ion irradiated BeO ceramics. Irradiation was carried out on DC-60 heavy ion accelerator using Ni12+ ions with an energy of 100 MeV with irradiation fluence of 1013-1014 ions/cm2. It has been established that intensity decrease and shape change of OSL (Optically Stimulated Luminescence) curves for irradiated samples are caused by concentration increase of defects and amorphous inclusions, which affect ceramics reflectance. It has been determined that change in magnitude of atom displacements from lattice sites is exponential, which has great influence on crystal structure distortion and deformation in case of defect overlap regions formation at large irradiation fluences.

中文翻译：

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Ni12+重离子辐照对BeO陶瓷光学和结构性能的影响

摘要 本文介绍了重离子辐照BeO 陶瓷的结构和光学变化的研究结果。使用能量为 100 MeV 的 Ni12+ 离子在 DC-60 重离子加速器上进行辐照，辐照通量为 1013-1014 离子/cm2。已经确定辐照样品的 OSL（光学受激发光）曲线的强度降低和形状变化是由于缺陷和无定形夹杂物的浓度增加引起的，这会影响陶瓷反射率。已经确定，原子从晶格位点位移的幅度变化是指数级的，在大辐照通量下形成缺陷重叠区域的情况下，这对晶体结构扭曲和变形有很大影响。