Neutron irradiation and post annealing effect on sapphire by positron annihilation
文献类型：期刊论文
| 作者 | Han, JC; Zhang, HL; Zhang, MF; Wang, BY ; Li, ZX; Xu, CH; Guo, HX; Wang BY(王宝义); Li ZX(李卓昕)
|
| 刊名 | APPLIED RADIATION AND ISOTOPES
 |
| 出版日期 | 2010 |
| 卷号 | 68期号:9页码:1699-1702 |
| 关键词 | Sapphire Neutron irradiation Post annealing Positron lifetime CDB |
| 通讯作者 | [Han, Jie-cai ; Zhang, Hai-liang ; Zhang, Ming-fu ; Xu, Cheng-hai ; Guo, Huai-xin] Harbin Inst Technol, Ctr Composite Mat, Harbin 150080, Peoples R China ; [Wang, Bao-yi ; Li, Zhuo-xin] CAS, Inst High Energy Phys, Beijing 100088, Peoples R China |
| 英文摘要 | Sapphire single crystals grown by an improved Kyropoulos-like method are irradiated by fast neutron flux. The irradiated doses of neutron are 10(18) and 10(19) n/cm(2). The infrared transmission spectra of sapphire were studied before and after irradiation. The irradiated samples were annealed at 200, 400, 600, 800 and 1000 degrees C for 10 min in ambient atmosphere. Positron annihilation studies have been carried out before and after neutron irradiation. The experimentally measured positron lifetime in the pristine specimen is 143 ps. There were aluminum vacancies produced in sapphire crystals after neutron irradiation. The positron lifetime increased with the dose of neutron flux. A longer value tau(2) was found after annealing at 600 degrees C, which indicated vacancies were aggregated with each other. The second long-time component tau(2) has been found to increase with the annealing temperature. There was almost no change in peak position of the CDB spectra after neutron irradiation and isothermal annealing. The chemical environment of core in sapphire did not change greatly after neutron irradiation. (C) 2010 Elsevier Ltd. All rights reserved. |
| 学科主题 | Chemistry; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging |
| 类目[WOS] | Chemistry, Inorganic & Nuclear ; Nuclear Science & Technology ; Radiology, Nuclear Medicine & Medical Imaging |
| 研究领域[WOS] | Chemistry ; Nuclear Science & Technology ; Radiology, Nuclear Medicine & Medical Imaging |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000279415800017 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/239486]  |
| 专题 | 高能物理研究所_多学科研究中心 高能物理研究所_核技术应用研究中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Han, JC,Zhang, HL,Zhang, MF,et al. Neutron irradiation and post annealing effect on sapphire by positron annihilation[J]. APPLIED RADIATION AND ISOTOPES,2010,68(9):1699-1702. |
| APA | Han, JC.,Zhang, HL.,Zhang, MF.,Wang, BY.,Li, ZX.,...&李卓昕.(2010).Neutron irradiation and post annealing effect on sapphire by positron annihilation.APPLIED RADIATION AND ISOTOPES,68(9),1699-1702. |
| MLA | Han, JC,et al."Neutron irradiation and post annealing effect on sapphire by positron annihilation".APPLIED RADIATION AND ISOTOPES 68.9(2010):1699-1702. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。