Study On Tb³⁺ -doped High Density Scintillating Glasses

As rapid development of nuclear physics, space physics, high-energy physics and other fields, scintillation material, as a high-energy radiation energy conversion material, has begun to attract close attention. Due to some excellent characteristic such as high light yield, fast decay, and radiation hardness and so on, scintillation crystals have been widely used. But scintillation crystals also have some shortages, such complex process, long production cycle, and high cost. Finding a scintillation material to substitute scintillation crystals become one of the most research points. Scintillation glass, ease to adjust the composition, simply produce, low cost, and large size could be prepared, become one candidate material of scintillation material.In this paper, The Samples were selected Tb³⁺ ion as a luminescent center, properties in the heavy metal oxide glasses, tellurite glasses and oxyfluoride glasses were studied. The effects of samples on the density, transmission, luminescence properties and X-ray excited emission spectra were investigated. These results provide the theoretical and experimental basis for further study of scintillation glasses.In the first chapter, the concept of scintillation materials, performance indicators and applications were introduced, and a brief summary of the classification of scintillation materials and the performance of some of the main scintillation materials. Then the background of scintillation glasses as well as the status of research and development at home and abroad was summarized. In the end, the purpose and main content of this study put forward.In the second chapter, some relevant basic theories, including rare earth theory, theory of glass formation and solid theoretical and scintillator light emitting mechanism, were introduced. Understanding these theories in-depth would provide a guarantee for study.In the third chapter, the main experimental content of the paper, experimental methods, raw materials, and test methods and test equipment were introduced.In the fourth chapter, properties of heavy metal oxide glass matrix systems, and Tb3 + ions as aluminescent center, were described. The density of glass samples, fluorescence spectroscopy, X-ray excited emission spectra were also measured. The effects of different glass matrix systems were investigated.In the fifth chapter, properties of tellurite glass matrix systems, and Tb 3 + ions as a luminescent center, were described. The density of glass samples, fluorescence spectroscopy, X-ray excited emission spectra were also measured. The effects of different glass matrix systems were investigated.In the sixth chapter, properties of the oxyfluoride glass matrix systems, and Tb3 + ions as a luminescent center, were described. The density of glass samples, fluorescence spectroscopy, X-ray excited emission spectra were also measured. The effects of different glass matrix systems were investigated.In the last chapter, some proposed innovative ideas and main contents of the research were summarized, At the same time, shortcomings of this paper as well as further research were discussed.