Line identification of extreme ultraviolet spectra ofMo V to Mo XVIII in EAST tokamak br
文献类型：期刊论文
| 作者 | Zhang Wen-Min2,3; Zhang Ling3 ; Cheng Yun-Xin1,3; Wang Zheng-Xiong2; Hu Ai-Lan3; Duan Yan-Min3; Zhou Tian-Fu3; Liu Hai-Qing3
|
| 刊名 | ACTA PHYSICA SINICA
 |
| 出版日期 | 2022-06-05 |
| 卷号 | 71 |
| ISSN号 | 1000-3290 |
| 关键词 | EAST tokamak extreme ultraviolet spectra molybdenum impurity line identification |
| DOI | 10.7498/aps.71.20212383 |
| 通讯作者 | Zhang Ling(zhangling@ipp.ac.cn) ; Wang Zheng-Xiong(zxwang@dlut.edu.cn) |
| 英文摘要 | The presence of high-Z impurities in magnetically confined fusion devices has different influences on theconfinement property of the plasma due to the high cooling rate of high-Z impurities. The first wall of EAST isequipped with molybdenum tiles, molybdenum particles sputtered from inevitable plasma-wall interaction enterinto the plasma and become high-Z impurity. In this paper, four fast-time-response extreme ultraviolet (EUV)spectrometers, a system which is upgraded in the EAST 2021 campaign, are used to monitor the line emissionfrom impurity ions in the 5-500 A wavelength range simultaneously. The in-situ wavelength calibration iscarried out accurately using several well-known emission lines of low- and medium-Z impurity ions. Theobserved spectral lines are carefully identified based on the National Institute of Standards Technology (NIST)database, previously published experimental data and the time evolution of the normalized line intensity ofemission lines from impurity ions. At the lower electron temperature (Te0 = 1.5 keV), the EUV spectra emittedfrom molybdenum ions in the range of 5-485 A are systematically identified in EAST discharges accompaniedwith spontaneous sputtering events. As a result, two unresolved transition arrays of molybdenum spectracomposed of Mo19+-Mo24+ (Mo XX-Mo XXV) and Mo16+-Mo29+ (Mo XVII-Mo XXX) are observed in the rangesof 15-30 A and 65-95 A. In addition, several spectral lines of lower molybdenum ions of Mo4+-Mo17+ (Mo V-MoXVIII) in the ranges of 27-60 A and 120-485 A are observed and identified on EAST for the first time,including a few strong and isolated forbidden and resonant lines, e.g. Mo XII at 329.414 A, 336.639 A and381.125 A, Mo XIII at 340.909 A and 352.994 A, Mo XIV at 373.647 A and 423.576 A, Mo XV at 50.448 A,57.927 A and 58.832 A. Six spectral lines are newly observed in the range of 27-32 A, i.e. (27.21 +/- 0.01) A,(27.37 +/- 0.01) A, (28.99 +/- 0.01) A, (30.81 +/- 0.01) A, (31.54 +/- 0.01) A and (31.83 +/- 0.01) A, which may be MoXV-Mo XVIII spectral lines. As a result, twelve strong and isolated spectral lines are chosen in routineobservation for impurity transport physical study. The identification of these spectral lines not only enriches themolybdenum atom database, but also provides a solid experimental data base for magnetically confined devicesto study the behavior and transport in core and edge plasmas of high-Z impurity. |
| WOS关键词 | SOFT-X-RAY ; SPECTROMETER ; TUNGSTEN ; CALIBRATION |
| 资助项目 | National MCF Energy R&D Program, China[2022YFE03180400] ; National Natural Science Foundation of China[11925501] ; National Key Research and Development Program of China[2018YFE0311100] ; National Key Research and Development Program of China[2019YFE030403] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| 出版者 | CHINESE PHYSICAL SOC |
| WOS记录号 | WOS:000814074300012 |
| 资助机构 | National MCF Energy R&D Program, China ; National Natural Science Foundation of China ; National Key Research and Development Program of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/129552]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhang Ling; Wang Zheng-Xiong |
| 作者单位 | 1.Univ Sci & Technol China, Grand Suchool, Sci Isl Branch, Hefei 230026, Peoples R China 2.Dalian Univ Technol, Sch Phys, Dalian 116024, Peoples R China 3.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Wen-Min,Zhang Ling,Cheng Yun-Xin,et al. Line identification of extreme ultraviolet spectra ofMo V to Mo XVIII in EAST tokamak br[J]. ACTA PHYSICA SINICA,2022,71. |
| APA | Zhang Wen-Min.,Zhang Ling.,Cheng Yun-Xin.,Wang Zheng-Xiong.,Hu Ai-Lan.,...&Liu Hai-Qing.(2022).Line identification of extreme ultraviolet spectra ofMo V to Mo XVIII in EAST tokamak br.ACTA PHYSICA SINICA,71. |
| MLA | Zhang Wen-Min,et al."Line identification of extreme ultraviolet spectra ofMo V to Mo XVIII in EAST tokamak br".ACTA PHYSICA SINICA 71(2022). |
入库方式： OAI收割
来源：合肥物质科学研究院
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