Study On Luminescent Property Of Tb³⁺ Doped Silicate Nano Scintillation Glass

Scintillation materials is an optical function materials which can emit visible light after the absorption of high-energy photon, in recent years, it has been widely used in many field, such as high-energy physics, nuclear physics, astrophysics, geophysics, industrial inspection, medical imaging and security testing etc. Scintillation crystal is scintillator which has been studied and used widely, such as CeF₃, PbWO₄ and so on. Scintillation glass with a number of advantages, such as the simple Preparation, the chemical composition is easy to adjusted, Easy to achieve large-size, good stability, be able to pull into fiber,etc. Therefore, it has become one of the hot materials for many countries in the world. In my thesis, through optimizing Tb³⁺ doped silicate nano scintillation glasss matrix, sensitizer, brightening agent components ,we improve the melting temperature, holding time and the atmosphere, and change the heat treatment processing temperature to generate BaF₂ nano-crystal in the glass. Nano-crystal has a better rare earth soluble, and a lower phonon energy, so that luminescent property of Tb³⁺doped silicate nano scintillation glasss has been noticeably improved.