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Line identification of extreme ultraviolet (EUV) spectra from low-Z impurity ions in EAST tokamak plasmas

文献类型：期刊论文

作者LI,Lei6,7; ZHANG,Ling6; XU,Zong2,5; MORITA,Shigeru1; CHENG,Yunxin6,7; ZHANG,Fengling6; ZHANG,Wenmin3,6; DUAN,Yanmin6; ZANG,Qing6; WANG,Shouxin6
刊名Plasma Science and Technology
出版日期2021-05-27
卷号23
ISSN号1009-0630
关键词line identification EUV spectroscopy EUV spectra impurity line emissions tokamak plasmas
DOI10.1088/2058-6272/abfea2
通讯作者ZHANG,Ling()
英文摘要Abstract Extreme ultraviolet (EUV) spectra emitted from low-Z impurity ions in the wavelength range of 10–500 ? were observed in Experimental Advanced Superconducting Tokamak (EAST) discharges. Several spectral lines from K- and L-shell partially ionized ions were successfully observed with sufficient spectral intensities and resolutions for helium, lithium, boron, carbon, oxygen, neon, silicon and argon using two fast-time-response EUV spectrometers of which the spectral intensities are absolutely calibrated based on the intensity comparison method between visible and EUV bremsstrahlung continua. The wavelength is carefully calibrated using well-known spectra. The lithium, boron and silicon are individually introduced for the wall coating of the EAST vacuum vessel to suppress mainly the hydrogen and oxygen influxes from the vacuum wall, while the carbon and oxygen intrinsically exist in the plasma. The helium is frequently used as the working gas as well as the deuterium. The neon and argon are also often used for the radiation cooling of edge plasma to reduce the heat flux onto the divertor plate. The measured spectra were analyzed mainly based on the database of National Institute of Standards and Technology. As a result, spectral lines of He II, Li II–III, B IV–V, C III–VI, O III–VIII, Ne II–X, Si V–XII, and Ar X–XVI are identified in EAST plasmas of which the central electron temperature and chord-averaged electron density range in Te0?=?0.6–2.8 keV and ne = (0.5–6.0) × 1019 m?3, respectively. The wavelengths and transitions of EUV lines identified here are summarized and listed in a table for each impurity species as the database for EUV spectroscopy using fusion plasmas.
WOS关键词H-MODE ; SPECTROMETER ; CALIBRATION ; INJECTION ; BEHAVIOR
资助项目National Key Research and Development Program of China[2018YFE0311100] ; National Key Research and Development Program of China[2017YFE0300402] ; National Key Research and Development Program of China[2017YFE0301300] ; National Natural Science Foundation of China[11905146] ; National Natural Science Foundation of China[11775269] ; National Natural Science Foundation of China[U1832126] ; National Natural Science Foundation of China[11805133] ; Hefei Science Center High-end User Development Fund Project[2019HSC-UE014] ; Chinese Academy of Sciences President's International Fellowship Initiative (PIFI)[2020VMA0001]
WOS研究方向Physics
语种英语
出版者IOP Publishing
WOS记录号IOP:1009-0630-23-7-ABFEA2
资助机构National Key Research and Development Program of China ; National Natural Science Foundation of China ; Hefei Science Center High-end User Development Fund Project ; Chinese Academy of Sciences President's International Fellowship Initiative (PIFI)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/122532]  
专题中国科学院合肥物质科学研究院
通讯作者ZHANG,Ling
作者单位1.National Institute for Fusion Science, Toki 509-5292, Gifu, Japan
2.Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, People’s Republic of China
3.Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian 116024, People’s Republic of China
4.Key Laboratory of Atomic and Molecular Physics and Functional Materials of Gansu Province, College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, People’s Republic of China
5.Advanced Energy Research Center, Shenzhen University, Shenzhen 518060, People’s Republic of China
6.Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China
7.University of Science and Technology of China, Hefei 230026, People’s Republic of China
推荐引用方式
GB/T 7714		 LI,Lei,ZHANG,Ling,XU,Zong,et al. Line identification of extreme ultraviolet (EUV) spectra from low-Z impurity ions in EAST tokamak plasmas[J]. Plasma Science and Technology,2021,23.
APA LI,Lei.,ZHANG,Ling.,XU,Zong.,MORITA,Shigeru.,CHENG,Yunxin.,...&HU,Liqun.(2021).Line identification of extreme ultraviolet (EUV) spectra from low-Z impurity ions in EAST tokamak plasmas.Plasma Science and Technology,23.
MLA LI,Lei,et al."Line identification of extreme ultraviolet (EUV) spectra from low-Z impurity ions in EAST tokamak plasmas".Plasma Science and Technology 23(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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