钛宝石中子辐照色心的研究
文献类型：期刊论文
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| 作者 | 蒋成勇 ; 周国清 ; 徐军 |
| 刊名 | 中国激光
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| 出版日期 | 2005 |
| 卷号 | 32期号:7页码:973 |
| 关键词 | 激光材料 laser materials 钛宝石 Ti-doped sapphire 中子辐照 neutrons irradiation 色心 color center 热释光 thermoluminescence |
| ISSN号 | 0258-7025 |
| 其他题名 | Investigations of Neutron-Induced Color Centers in Ti-Doped Sapphire Crystals |
| 中文摘要 | 研究了中子辐照下钛宝石单晶体缺陷的形成及光学性能的变化。对温度梯度法(TGT)生长的钛宝石晶体进行中子辐照。中子能量为1．5MeV，剂量为4．32×10^18 neutrons／cm^2。辐照后194nm吸收峰强度增加,268nm吸收峰强度则降低。荧光谱检测中发现辐照使得420nm荧光峰强度明显降低，荧光峰位置也蓝移至414nm处。分析表明辐照使得钛宝石晶体内形成F^+缺陷，同时Ti^4+离子则转化成Ti^3+离子。辐照后的钛宝石在247C处有热释光TL出现，通过初始上升法计算出其陷阱深度为0．63eV。; Neutron-irradiation induced optical properties changes and defects formation in Ti-doped sapphire crystals were studied. Temperature gradient technique (TGT) grown Ti-doped sapphire crystals were irradiated by 1.5 MeV neutrons with a dose of 4.32×1016 neutrons/cm2. Absorption, emission and excitation spectra were presented. The 194-nm absorption band intensity enhanced and the 268-nm band weakened after irradiation. And the 420-nm luminescence band weakened and blue shifted to 414-nm. The results indicated that F+-type centers formed and the valence state of titanium switched from quadrivalent to trivalent during irradiation. Thermoluminescence (TL) was observed at 247℃ and assigned to irradiation-induced color centers. The thermoluminescence trap depth is 0.63 eV calculated with initial elevation method, and the lower thermoluminescence intensity is ascribed to the quenching effect of Ti ions. |
| 学科主题 | 光学材料;晶体 |
| 分类号 | TN304 |
| 收录类别 | ei |
| 语种 | 中文 |
| 公开日期 | 2009-09-24 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/5473]  |
| 专题 | 上海光学精密机械研究所_激光与光电子功能材料研发中心 |
| 推荐引用方式 GB/T 7714 | 蒋成勇,周国清,徐军. 钛宝石中子辐照色心的研究, Investigations of Neutron-Induced Color Centers in Ti-Doped Sapphire Crystals[J]. 中国激光,2005,32(7):973, 976. |
| APA | 蒋成勇,周国清,&徐军.(2005).钛宝石中子辐照色心的研究.中国激光,32(7),973. |
| MLA | 蒋成勇,et al."钛宝石中子辐照色心的研究".中国激光 32.7(2005):973. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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