| 硼硅酸盐玻璃的伽马辐照效应研究 |
| Alternative Title | Study on gamma irradiation effects of borosilicate glass
|
| 王磊 |
| Subtype | 学士
|
| Thesis Advisor | 彭海波
|
| 2021-05-22
|
| Degree Grantor | 兰州大学
|
| Place of Conferral | 兰州
|
| Degree Name | 工学学士
|
| Degree Discipline | 辐射防护与核安全
|
| Keyword | 硼硅酸盐玻璃
高放废物
γ辐照
能量带隙
Urbach 能量
|
| Abstract | 当前我国正面临较为严重的能源危机，化石燃料的使用带来了很多环境问题，同时新
型能源的开发利用也面临很多条件限制。核能的开发利用有效地缓解了当前的能源危机，
对于优化能源结构具有重要意义。然而，核能源在带来清洁高效的同时也会产生大量放射
性废物，其中高放射性废物需要进行深埋处置。当前我国处理处置高放射性废物的主要方
式是玻璃固化-深地质处置，即将核能源开发利用过程中产生的高放废物固溶在玻璃基
材中，然后深埋在地下 500-1000m 的岩层中。深埋的固化玻璃处在高温和强辐射环境下，
放射性废物持续释放的、β、γ等射线对固化玻璃的微观结构、宏观性质产生影响，进
而导致高放射性核素的浸出率上升。因此研究硼硅酸盐玻璃的γ辐照效应对于更好地实现
高放废物的处理处置具有十分重要的意义。
本论文工作利用不同剂量的γ射线辐照硼硅酸盐玻璃，使用傅里叶变换红外光谱仪
（FT-IR）测量硼硅酸盐玻璃的红外谱并进行高斯拟合;使用激光共聚焦拉曼光谱仪测量硼
硅酸盐玻璃的拉曼光谱和光致发光光谱，对拉曼光谱和光致发光光谱进行高斯拟合;通过
紫外可见光吸收光谱，讨论分析不同吸收剂量下玻璃的能量带隙和 Urbach 能量的变化规律，
分析辐照前后玻璃样品发生的变化和相关机理。 |
| Other Abstract | China is facing a serious energy crisis. The use of
fossil fuels has brought many
environmental problems,
while the development
and utilization
of new
energy
sources are also
facing many constraints.
The
development and
utilization of nuclear
energy
have
effectively
alleviated the current energy
crisis and are of
great significance for optimizing
the energy
structure. However, nuclear energy produces a large amount of radioactive waste while bringing
clean and efficient energy, of which highly radioactive waste needs to be buried deep. At present,
the main way of handling and disposing of highly radioactive waste in China is
"glass
curing-deep geological disposal", which dissolves the
high-release waste
generated
in the
process of nuclear energy development and utilization in
the glass substrate,
and then buries it
deep in the rock formations of 500-1000m underground. Deeply buried solidified glass is in high
temperature and strong radiation environment, radioactive waste continued to release , β, γand
other rays on the microstructure of cured glass, macro properties, resulting in high radionuclide
leaching rate increased. Therefore, it is very important to study the γirradiation effect of
borosilicate glass to better realize the treatment and disposal of high-discharge waste.
In this paper, the borosilicate glass is irradiated by γrays with different absorbed doses.
Fourier Transformation infrared spectrometer (FT-IR) was used to measure the infrared spectrum
of borosilicate glass and perform Gaussian fitting;The Raman spectrometer measures the Raman
and PL spectra of borosilicate glass, and gauges
the
Raman
spectrum and
PL spectrum, and
discusses the analysis of the energy band gap and
the
change
law of Urbach
energy in glass
at
different irradiated doses through the ultraviolet visible light
absorption spectrum. Analysis
of
changes in glass samples before and after irradiation and related mechanisms. |
| Pages | 35
|
| URL | 查看原文
|
| Language | 中文
|
| Document Type | 学位论文
|
| Identifier | https://ir.lzu.edu.cn/handle/262010/461291
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| Collection | 核科学与技术学院
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| Affiliation | 核科学与技术学院
|
| First Author Affilication | School of Nuclear Science and Technology
|
Recommended Citation
GB/T 7714 |
王磊. 硼硅酸盐玻璃的伽马辐照效应研究[D]. 兰州. 兰州大学,2021.
|
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