1、 铋玻璃论文：无铅玻璃抗辐照性能和 Pr（3+）掺杂玻璃发光性能的研究【中文摘要】本论文研究了无铅铋基玻璃的抗辐照性能和 Pr3+掺杂磷酸盐玻璃的发光性能。主要研究成果如下：研究了两组 Ce02和 Ti02 单掺或共掺无铅重金属 Bi203 基硼硅酸盐玻璃的 -射线辐照效应。结果表明,Ti02 掺杂对铋基重金属氧化物玻璃有较好的抗 射线辐照效应,而 Ce02 则没有显示预期的作用,其原因可能在于Ce4+/Ce3+离子对具有较大的氧化【英文摘要】The thesis emphasizes on the irradiation resistance of lead-free glasses and
2、 luminescence properties of Pr3+ doped glasses. The main research results are shown as follows.The y-ray irradiation effects on Bi2O3 based borosilicate glasses doped with CeO2 and/or TiO2 are investigated. TiO2 has played a positive role in increasing the irradiation resistance properties of Bi2O3
3、based glasses, while CeO2 hasnt exhibited the expected effect due to the impact of the high oxidation-reduction potential of Ce4+/Ce3+ pairs, which most likely take part in the reaction process as oxidant in the course of of glass formation. Damage recovery ability of the glasses is pretty low, whic
4、h depends less upon the compositions of matrix glasses than the kinds of doped stabilizing agents.Intra- and inter-configurational luminescence properties of Pr3+ doped strontium phosphate glasses are studied under excitation wavelength of 290 nm and 447 nm, respectively. Under the excitation at 447
5、 nm, the ratios of intensities of blue, green and red light to that of yellow light can be controlled by adjusting the concentration of Pr3+ ion. And under the excitation at 290 nm, an intensive broad UV emission due to 4f15d14f2 is observed.The effects of co-dopants, that is, Pr3+-Dy3+ and Pr3+-SnO
6、2, upon the luminescence properties of Pr3+ ion are investigated. Experimental results show that the intensity of Pr3+ ion is enhanced by efficient energy transfer process from Dy3+ ions. Theoretical analysis reveals that the dominant mechanism of energy transfer from Dy3+ ion to Pr3+ ion is quadrup
7、ole-quadrupole interactions with the estimated transfer efficiency up to 52.9%. The energy transfer from SnO2 to Pr3+ ion can also be observed in the Pr3+-SnO2 co-doped glasses. Under the excitation at 267 nm, a broad emission with a width at half-maximum about 230 nm is observed, which is bridged b
8、y the UV emission of Pr3+ and blue emission of SnO2. Besides, a new red emission at 610 nm appears.【关键词】铋玻璃 抗辐照 Pr3+离子 磷酸盐玻璃 荧光光谱【英文关键词】Bismuth glass Irradiation resistance Pr3+ ion Phosphate glass Luminescence spectra【备注】索购全文在线加好友 ：1.3.9.9.3 .8848 同时提供论文写作一对一指导和论文发表委托服务【目录】无铅玻璃抗辐照性能和 Pr（3+）掺杂玻璃发光性能
9、的研究 摘要 5-6 Abstract 6 第1 章 文献综述 10-20 1.1 前言 10 1.2 重金属氧化物玻璃 10-11 1.2.1 铅玻璃 10-11 1.2.2 无铅玻璃 11 1.2.3 无铅玻璃的应用 11 1.3 玻璃的辐照损伤 11-13 1.3.1 玻璃中的色心 11-12 1.3.2 辐照效应研究方法 12-13 1.3.3玻璃的抗辐射性能 13 1.4 稀土离子掺杂玻璃 13-19 1.4.1 基质玻璃 13-15 1.4.2 稀土离子的能级结构 15 1.4.3 稀土离子 Pr(3+)的光谱性质 15-16 1.4.4 稀土离子掺杂发光玻璃 16-19 1.5
10、课题的提出和研究内容 19-20 第 2 章 实验 20-23 2.1 样品制备 20-21 2.1.1 实验原料 20 2.1.2 实验仪器和设备 20 2.1.3 玻璃样品的制备 20-21 2.2 性能测试 21-23 2.2.1 玻璃密度测试 21 2.2.2 辐照处理 21-22 2.2.3 吸收和透过光谱 22 2.2.4 激发和发射光谱 22 2.2.5 荧光寿命 22-23 第 3 章 无铅重金属氧化物玻璃的抗辐射性能 23-35 3.1 引言 23 3.2 玻璃组成及紫外-可见透过光谱 23-25 3.3 伽马射线()辐照效应 25-34 3.3.1 透过光谱 25-27 3
11、.3.2 辐照诱导吸收系数 27-31 3.3.3 辐照诱导吸收的自恢复效应 31-34 3.4 小结 34-35 第 4 章 Pr(3+)掺杂玻璃的发光性能 35-43 4.1 引言 35 4.2 吸收光谱 35-36 4.2.1 基质玻璃 35 4.2.2 吸收光谱 35-36 4.3 荧光光谱 36-42 4.3.1 4f-4f 内层电子跃迁 36-39 4.3.2 4f-5d 能级间电子跃迁 39-42 4.4 小结 42-43 第 5 章 共掺对 Pr(3+)离子发光性能的影响 43-59 5.1 引言 43 5.2 Pr(3+)-Dy(3+)共掺 43-50 5.2.1 吸收光谱 43-44 5.2.2荧光光谱 44-46 5.2.3 荧光寿命 46-49 5.2.4 CIE 色坐标图 49-50 5.3 Pr(3+)-SnO_2 共掺 50-57 5.3.1 吸收光谱 51 5.3.2 发射光谱 51-56 5.3.3 Pr(3+)-SnO_2 共掺样品色坐标图 56-57 5.4 小结 57-59 第 6 章 全文总结 59-60 参考文献 60-66 致谢 66-67 附录 67
