Scintillation Screens

Scintillation screens are materials used to convert incoming radiation, like X-rays or particles, into visible light. These screens typically consist of a scintillator material coated onto a substrate, like glass or plastic. When the radiation interacts with the scintillator, it emits flashes of light, which can be captured and converted into an image by a detector, such as a camera or an imaging device. These screens are commonly used in medical imaging, industrial inspections, and scientific research to visualize and capture images of the radiation passing through an object or a sample.

Thin and flat scintillation crystal plates are commonly used in high spatial resolution imaging applications, such as Scanning Electron Microscopes (SEM), proton beam imaging, low-energy or soft X-ray imaging, and VUV and XUV radiation applications. Critical properties of these scintillation screens include high light output, optical homogeneity, flatness, and excellent roughness.

Hangzhou Shalom EO offers scintillation screens made from YAG(Ce), YAP(Ce), GAGG(Ce), and LuAG(Ce) crystals. YAG(Ce) and LuAG(Ce) demonstrate exceptional properties ideal for low-energy scintillation imaging. These screens are available in minimum thicknesses of 0.01mm with substrates and 0.05mm free-standing, featuring large sizes up to 4 inches.

Due to application requirements, for example, to obtain higher spatial resolution and higher light output efficiencies, the scintillation crystal screen is processed to be very thin, making it fragile and brittle. To support the crystal and facilitate handling and transportation, a glass substrate, often made of fused silica, is added and bonded to the crystal scintillation screen. The bonding process is as follows:  The fused silica substrate is bonded to crystals using optical adhesive. A layer of optical adhesive is applied to the surface of the fused silica substrate, and then the crystal sheet is placed on top. After the optical adhesive cures, the two are fixed together. Therefore, this product consists of a substrate, an optical adhesive layer, and a cerium-doped yttrium aluminum garnet crystal sheet. The material of the supporting substrate material will be chosen in consideration of its robustness, radiation resistance, optical transparency, etc.