Analyses of deuterium retention in tungsten and graphite first wall materials by laser-induced ablation spectroscopy on EAST
文献类型：期刊论文
| 作者 | Oelmann, Jannis1; Hu, Zhenhua2 ; Li, Cong3; Sun, Liying3; Liu, Jiamin3; Ding, Fang2; Wang, Liang2; Brezinsek, Sebastijan1; Ding, Rui2; Ding, Hongbin3
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| 刊名 | FUSION ENGINEERING AND DESIGN
 |
| 出版日期 | 2021 |
| 卷号 | 162 |
| 关键词 | Laser-induced ablation spectroscopy Plasma-facing components Deuterium retention In situ analysis EAST tokamak |
| ISSN号 | 0920-3796 |
| DOI | 10.1016/j.fusengdes.2020.112108 |
| 通讯作者 | Hu, Zhenhua(huzh@ipp.ac.cn) |
| 英文摘要 | Plasma-wall interactions at the first wall in fusion experimental devices are critical for the life time of plasma facing components and tokamak operation. In-situ measurements of these plasma-wall interaction processes are required in long pulse devices in order to understand better the underlying mechanisms as well as monitoring of the tritium content of the first wall as an immediate safety application. In this work we present measurements of the deuterium retention in the first wall of EAST using laser-induced ablation spectroscopy. The diagnostic is applied during plasma operation and the dynamic retention for graphite and tungsten as plasma-facing materials are compared, showing more than three times higher short-term retention in graphite than in tungsten. Laser based analysis is applied during a shift of the vertical positions of the plasma column in limited as well as in the start-up phase of discharges in diverted magnetic configuration. Plasma core densities of n(e) = (1.5-3.2) x 10(19)/m(3) are chosen to vary the ion flux to the first wall and study saturation effects of deuterium on the surface first wall materials during tokamak plasma operation. A linear dependence of the retention from ion fluence is observed for graphite as PFC up to 3 x 10(18)D(+)/cm(2), followed by a constant retention up to fluences of 3.5 x 10(19)D(+)/cm(2) for nearby first wall temperatures of T-PFC approximate to 350 K. |
| WOS关键词 | INDUCED BREAKDOWN SPECTROSCOPY |
| 资助项目 | EURO-fusion Consortium[633053] ; SINO-GERMAN project by the Deutsche Forschungsgemeinschaft ; National Natural Science Foundation of China[11861131010] ; National Magnetic Confinement Fusion Science Program of China[2017YFE0301300] |
| WOS研究方向 | Nuclear Science & Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000603550100004 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | EURO-fusion Consortium ; SINO-GERMAN project by the Deutsche Forschungsgemeinschaft ; National Natural Science Foundation of China ; National Magnetic Confinement Fusion Science Program of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/120056]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Hu, Zhenhua |
| 作者单位 | 1.Forschungszentrum Julich, Inst Energie & Klimaforsch Plasmaphys, Partner Trilateral Euregio Cluster TEC, D-52425 Julich, Germany 2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China 3.Dalian Univ Technol, Key Lab Mat Modificat Laser Ion & Electron Beams, Chinese Minist Educ, Sch Phys, Dalian 116024, Peoples R China |
| 推荐引用方式 GB/T 7714 | Oelmann, Jannis,Hu, Zhenhua,Li, Cong,et al. Analyses of deuterium retention in tungsten and graphite first wall materials by laser-induced ablation spectroscopy on EAST[J]. FUSION ENGINEERING AND DESIGN,2021,162. |
| APA | Oelmann, Jannis.,Hu, Zhenhua.,Li, Cong.,Sun, Liying.,Liu, Jiamin.,...&Chen, Junlin.(2021).Analyses of deuterium retention in tungsten and graphite first wall materials by laser-induced ablation spectroscopy on EAST.FUSION ENGINEERING AND DESIGN,162. |
| MLA | Oelmann, Jannis,et al."Analyses of deuterium retention in tungsten and graphite first wall materials by laser-induced ablation spectroscopy on EAST".FUSION ENGINEERING AND DESIGN 162(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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