| The whole world is dramatically changing along with the technology; meanwhile, all aspectsof our society have been continuously proceeding. Similarly, either the quantity or the needs of thehigh-performance of scintillators also increases a lot. Nowadays, the scintillators has a much widerrange of applications and the cost as well as their production cycle of scintillation crystals can’tmeet the huge needs of community any more. Therefore, it is necessity to improve the propertiesof ceramic glasses to realize more practical applications. In order to meet the requirements, wemainly need to discover how to enhance the luminescent properties and the density of scintillators,whichis alreadytheprimarydomainof researches on scintillating glasses.The article mainly discovers the borosilicate scintillating glasses doped with Ce3+ions/Tb3+ions, containing high concentration of Gd2O3and Lu2O3. Also it includes discussions about thedensity, luminescent property, decay time and parts of scintillation properties of scintillatingglasses. Moreover, the quantitative and qualitative analysis on the energy transfer mechanism andefficiencybetween Ce3+ions and Tb3+ionsareinvolved.The first chapter of the paper primarily describes property index and classification of thescintillators. It also analyzes the advantages and disadvantages between scintillating glasses andcrystals in detail. The development of scintillation glasses doped with Ce3+and Tb3+ions inthe domestic and international is also sufficiently illustrated in this article, which indeed leads ourresearchto a morepromising direction.The second chapter explains the important theories of this article, mainly including the glassforming theory, the luminescent mechanism of scintillating glasses, the energy transfer theory andI-Htheory.The third chapter of the paper mainly introduces the operations and instruments related to theexperiments. The various properties and sources of raw materials, the experimental steps and formula optimization processes, the testing instruments and methods of the glass properties aredescribedindetail.The fourth chapter of the paper mainly introduces the properties of Ce3+doped scintillatingglasses with high (GdxLu1-x)2O3concentration. The scintillating glasses are made in theexperiments, and the different components of scintillation density, radiation length, absorption,excitation, emission under UV excitation, emission spectra under X-ray excitation and decay timesof Ce3+in the different components of scintillation glasses are measured. Through the comparisonand analysis of multiple samples, the changing concentration of Gd2O3and Lu2O3has an effect ontheluminescence propertiesanddensities ofthescintillators.The fifth chapter of the paper mainly introduces the properties of Ce3+doped scintillatingglasses with high (GdxLu1-x)2O3concentration. The density, transmission, excitation, emissionspectrum of Tb3+ions doped with Gd2O3and Lu2O3, emission spectra under X-ray excitation andenergy transfer efficiency of Gd3+to Tb3+ions are studied. The energy transfer mechanism and theenergytransferefficiency betweentwoions areanalyzed through fluorescencelifetimedata.The sixth chapter of the paper mainly introduces the properties of Ce3+/Tb3+dopedscintillating glasses with high (GdxLu1-x)2O3concentration. The transmission, excitation andemission spectra under X-ray or UV excitation at different molar concentrations of Ce3+to Tb3+ions and decay curves of Ce3+ions and Tb3+ions are investigated. The decay curves are expressedby the I-H model to analyze energy transfer mechanism between Ce3+ions and Tb3+ions. And theenergytransferefficiency iscalculated.The seventh chapter of the paper primarily describes the properties of Dy3+/Tb3+dopedscintillating glasses with high (GdxLu1-x)2O3concentration. The absorption, excitation, emissionspectra at different molar concentrations of Ce3+to Tb3+ions and decay times of Dy3+and Tb3+ions are investigated. The decay curves of Dy3+are fitted by the I-H model, the energy transfermechanism and the efficiency of energy transfer between Dy3+and Tb3+ions are analyzed by thefittingparameters.Finally, the thesis summarizes the contents and results involved in this study. The process, theresearch methods and some results are discussed. Also, the shortcomings of this study have beenpointedout.This studymay have somehelpforthefuture studyon scintillationglasses. |
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