Influence of the thickness of a SiO₂ reflective layer on the performance of a structured CsI(Tl) scintillation screen...

To obtain better light guidance and optical isolation effects under a limited microcolumn wall thickness, the influence of the thickness of a SiO₂ reflective layer on the performance of a structured CsI(Tl) scintillation screen based on an oxidized Si micropore array template in X-ray imaging was simulated. The results show that the SiO₂ reflective layer should maintain a certain thickness to achieve good light-guide performance. However, if the template is entirely composed of SiO₂, the light isolation performance of the microcolumn wall will be slightly worse. The results provide a basis for optimizing the thickness of SiO₂ reflective layer.