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

	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
刊名	CHINESE PHYSICS B
	2019-11-01
卷号	28
关键词	plasma detachment molecular spectrum deuterium
ISSN号	1674-1056
DOI	10.1088/1674-1056/ab54b2
通讯作者	Gao, Wei(gaowei@ipp.ac.cn)
英文摘要	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.
资助项目	National Natural Science Foundation of China[11805234]
WOS关键词	EDGE ; TEMPERATURE ; DIAGNOSTICS ; DISCHARGE ; FRONT
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000516544500002
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/103961]
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
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).