Characterization the microstructure and defects of matrix graphite irradiated with Xe ions
文献类型：期刊论文
| 作者 | Xu, HX; Lin, J; Li, JJ; Zhu, ZY; Zeng, GL; Liu, JD; Gu, BC; Liu, B |
| 刊名 | NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
 |
| 出版日期 | 2017 |
| 卷号 | 406期号:-页码:638-642 |
| 关键词 | Neutron-irradiation Carbon Beam |
| ISSN号 | 0168-583X |
| DOI | 10.1016/j.nimb.2017.03.159 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The matrix graphite of pebble fuel elements was irradiated with 1 MeV Xe ions at room temperature to fluences of 5.8 x 10(14) ions/cm(2) and 2.9 x 10(15) ions/cm(2), respectively. The microstructure and defects of matrix graphite samples were characterized by using scanning electron microscopy (SEM), Raman spectroscopy and slow positron beam techniques. The SEM result reveals that hundred-nanometer sized pores appear at the surface after irradiation and the density of pore increases with fluence. Raman results show that D peak (1350 cm(-1)) and G peak (1580 cm(-1)) are broadened after irradiation. In addition, the G peak position shifts from 1580 cm(-1) to 1560 cm(-1) with the linewidth increases from 21 cm(-1) to 132 cm(-1), corresponding to the increase in bond-angle disorder as the matrix graphite transforms from microcrystalline to amorphous carbon(a-C). The slow positron beam study shows that the defects trapped positron S parameter increases with fluence, suggesting that the vacancy-type defects concentration or size of open volume defects increases. The analysis of Raman and slow positron beam consistently conclude that the reason for the phase transition after irradiation is the increase in irradiation-induced vacancy defects accompanied by the overlap of disordered regions. (C) 2017 Elsevier B.V. All rights reserved. |
| WOS关键词 | NEUTRON-IRRADIATION ; CARBON ; BEAM |
| 语种 | 英语 |
| WOS记录号 | WOS:000407659500045 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/28575]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Xu, HX,Lin, J,Li, JJ,et al. Characterization the microstructure and defects of matrix graphite irradiated with Xe ions[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2017,406(-):638-642. |
| APA | Xu, HX.,Lin, J.,Li, JJ.,Zhu, ZY.,Zeng, GL.,...&Liu, B.(2017).Characterization the microstructure and defects of matrix graphite irradiated with Xe ions.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,406(-),638-642. |
| MLA | Xu, HX,et al."Characterization the microstructure and defects of matrix graphite irradiated with Xe ions".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 406.-(2017):638-642. |
入库方式： OAI收割
来源：上海应用物理研究所
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