Observation of deuterium molecule emission spectra under an active feedback control of H-mod plasma divertor detachment experiment on the EAST tokamak

doi:10.1088/1674-1056/ab54b2

HFCAS OpenIR

	Observation of deuterium molecule emission spectra under an active feedback control of H-mod plasma divertor detachment experiment on the EAST tokamak
	Gao, Wei; Huang, Juan; Xu, Jichan; Wang, Liang; Zhang, Jing; Su, Jianxun; Chen, Yingjie; Wu, Zhenwei
	2019-11-01
发表期刊	CHINESE PHYSICS B
ISSN	1674-1056
通讯作者	Gao, Wei(gaowei@ipp.ac.cn)
摘要	Based on neon gas puffing, an active feedback control of H-mod plasma divertor detachment experiment was successfully operated on the EAST tokamak. During the feedback control discharge, the plasma was detached by puffing neon gas and the strike point splitting phenomenon on divertor target was also clearly observed by divertor probes diagnostic. In boundary region, many neutral particle processes (atom and molecule) were happened and accompanied by their emission spectra under the detachment discharge. By studying these emission spectra, it is helpful for us to understand the role of atoms and molecules in boundary recycling, which is important for studying the physical mechanism of divertor detachment. For the Fulcher-alpha system (d(3p)(3)Pi(+/-)(u) -> a(2s)(3)Sigma(+)(g)), D-2 emission spectra in the range from 601 nm to 606 nm were observed, identified and fitted in the detachment experiment for the first time on the EAST, and the spectra in the Q(0-0) band (d(3)Pi(-)(u) -> a(2s)(3)Sigma(+)(g)) in the Q branch of the Fulcher-a system were used for detailed analysis to acquire the boundary region temperature T-e (below 5 eV), which could not be provided very well by other diagnostics on the EAST. An electronic version deuterium molecular spectral line database was established to identify the spectral lines and a multi-peak fitting program was developed to fit and analyze the observed spectra.
关键词	plasma detachment molecular spectrum deuterium
DOI	10.1088/1674-1056/ab54b2
关键词[WOS]	EDGE ; TEMPERATURE ; DIAGNOSTICS ; DISCHARGE ; FRONT
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[11805234]
项目资助者	National Natural Science Foundation of China
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000516544500002
出版者	IOP PUBLISHING LTD
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/103962
专题	中国科学院合肥物质科学研究院
通讯作者	Gao, Wei
作者单位	Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
第一作者单位	中科院等离子体物理研究所
通讯作者单位	中科院等离子体物理研究所
推荐引用方式 GB/T 7714	Gao, Wei,Huang, Juan,Xu, Jichan,et al. Observation of deuterium molecule emission spectra under an active feedback control of H-mod plasma divertor detachment experiment on the EAST tokamak[J]. CHINESE PHYSICS B,2019,28.
APA	Gao, Wei.,Huang, Juan.,Xu, Jichan.,Wang, Liang.,Zhang, Jing.,...&Wu, Zhenwei.(2019).Observation of deuterium molecule emission spectra under an active feedback control of H-mod plasma divertor detachment experiment on the EAST tokamak.CHINESE PHYSICS B,28.
MLA	Gao, Wei,et al."Observation of deuterium molecule emission spectra under an active feedback control of H-mod plasma divertor detachment experiment on the EAST tokamak".CHINESE PHYSICS B 28(2019).