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Experimental investigation of scrape-off layer blob high density transition in L-mode plasmas on EAST

文献类型：期刊论文

作者Wang, Ping2,4; Hu, Guanghai4; Yan, Ning4; Xu, Guosheng4; Meng, Lingyi2,4; Lu, Zhikang2,4; Yu, Lin2,4; Jia, Manni4; Wang, Yifeng4; Chen, Liang4
刊名PLASMA SCIENCE & TECHNOLOGY
出版日期2022-07-01
卷号24
ISSN号1009-0630
关键词blobs divertor detachment L-mode EAST
DOI10.1088/2058-6272/ac5f82
通讯作者Hu, Guanghai(ghhu@ipp.ac.cn) ; Wang, Liang(lwang@ipp.ac.cn)
英文摘要Lithium Beam Emission Spectroscopy systems in the outer midplane and divertor Langmuir probe arrays embedded in the divertor target plates, are utilized to investigate the scrape-off layer (SOL) blob transition and its relation with divertor detachment on EAST. The blob transition in the near SOL is observed during the density ramp-up phase. When the plasma density, normalized to the Greenwald density limit, exceeds a threshold of f (GW) similar to 0.5, the blob size and lifetime increases by 2 - 3 times, while the blob detection rate decreases by about 2 times. In addition, a weak density shoulder is observed in the near SOL region at the same density threshold. Further analysis indicates that the divertor detachment is highly correlated with the blob transition, and the density threshold of blob transition is consistent with that of the access to the outer divertor detachment. The potential physical mechanisms are discussed. These results could be useful for the understanding of plasma-wall interaction issues in future devices that will operate under a detached divertor and high density conditions (over the blob transition threshold).
WOS关键词SOL TRANSPORT ; FLUCTUATIONS ; PARTICLE ; PROFILE ; EDGE ; PROGRESS ; WALL
资助项目National Key R&D Program of China[2017YFE0301300] ; National Key R&D Program of China[2017YFA0402500] ; National Key R&D Program of China[2019YFE03030000] ; Institute of Energy, Hefei Comprehensive National Science Center[GXXT2020004] ; Institute of Energy, Hefei Comprehensive National Science Center[12105187] ; National Natural Science Foundation of China[11922513] ; National Natural Science Foundation of China[U19A20113] ; National Natural Science Foundation of China[11905255] ; National Natural Science Foundation of China[12005004] ; Anhui Provincial Natural Science Foundation[2008085QA38] ; China Postdoctoral Science Foundation[2021M702245] ; EAST team
WOS研究方向Physics
语种英语
出版者IOP Publishing Ltd
WOS记录号WOS:000813907200001
资助机构National Key R&D Program of China ; Institute of Energy, Hefei Comprehensive National Science Center ; National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation ; China Postdoctoral Science Foundation ; EAST team
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/129584]  
专题中国科学院合肥物质科学研究院
通讯作者Hu, Guanghai; Wang, Liang
作者单位1.Shenzhen Univ, Adv Energy Res Ctr, Shenzhen 518060, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.Hefei Comprehens Natl Sci Ctr, Inst Energy, Hefei 230031, Peoples R China
4.Chinese Acad Sci, Inst Plasma Phys, Hefei Inst Phys Sci, Hefei 230031, Peoples R China
5.Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Ping,Hu, Guanghai,Yan, Ning,et al. Experimental investigation of scrape-off layer blob high density transition in L-mode plasmas on EAST[J]. PLASMA SCIENCE & TECHNOLOGY,2022,24.
APA Wang, Ping.,Hu, Guanghai.,Yan, Ning.,Xu, Guosheng.,Meng, Lingyi.,...&Wang, Liang.(2022).Experimental investigation of scrape-off layer blob high density transition in L-mode plasmas on EAST.PLASMA SCIENCE & TECHNOLOGY,24.
MLA Wang, Ping,et al."Experimental investigation of scrape-off layer blob high density transition in L-mode plasmas on EAST".PLASMA SCIENCE & TECHNOLOGY 24(2022).

入库方式： OAI收割

来源：合肥物质科学研究院

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