This work reports in-situ ion beam induced luminescence (IBIL) of CaF₂ crystals using 2-MeV proton excitation. The in-situ IBIL experiments were carried out at pelletron Tandem accelerator at the National Center for Physics, Islamabad, Pakistan. The spectrophotometry UV–Visible analysis revealed that proton beam induced Ca colloids. Their concentration increases with fluence, and the mean size reaches about 10 nm. The IBIL results showed a wide luminescence band extended from 230 to 450 nm and a new band at about 210 nm, attributed to the self-trapped exciton (STE) decay. It was found that the luminescence intensity increases linearly with dose. From the absorption measurements, indicating the colloid formation in CaF₂ by proton irradiation, we believe that the latter colloids are responsible for the luminescence improvement during proton beam irradiation.

这项工作报告了使用2-MeV质子激发的CaF ₂晶体的原位离子束诱导发光（IBIL）。IBIL实验是在巴基斯坦伊斯兰堡国家物理中心的压球机串联加速器上进行的。紫外可见分光光度法分析表明质子束诱导钙胶体。它们的浓度随着通量的增加而增加，并且平均大小达到约10 nm。IBIL结果表明，宽的发光带从230 nm扩展到450 nm，并在约210 nm处出现了新的带，这归因于自陷激子（STE）的衰减。发现发光强度随剂量线性增加。通过吸收测量，表明CaF _2中的胶体形成 通过质子辐照，我们相信后者的胶体负责质子束辐照期间的发光改善。