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Comparison of natural grassy ELM behavior in favorable/unfavorable Bt in EAST

文献类型：期刊论文

作者DING,Genfan3,4; YANG,Qingquan3; XU,Guosheng3; LIN,Xin2,3; YE,Yang1; CHEN,Ran3; WANG,Yumin3; ZANG,Qing3; LAN,Heng3; CHEN,Liang3
刊名Plasma Science and Technology
出版日期2021-07-30
卷号23
关键词grassy ELM favorable and unfavorable Bt clustered ELM EAST
ISSN号1009-0630
DOI10.1088/2058-6272/ac061b
通讯作者DING,Genfan()
英文摘要Abstract The properties of grassy edge-localized modes (ELMs) in EAST in the favorable and unfavorable Bt are statistically studied. Statistical analysis indicates that there is no systematical difference in the frequencies of grassy ELMs under the two different magnetic configurations in the similar parameter spaces. The high-frequency grassy ELM (fELM?>?1 kHz) in unfavorable Bt is dependent on the high poloidal beta βp and high triangularity δu, while the high-frequency grassy ELM (fELM?>?1 kHz) in favorable Bt appears to rely on the high plasma density. A frequently occurring phenomenon in favorable Bt defined as ‘clustered ELM’ seems to be the most evident difference in ELM behavior between favorable and unfavorable Bt. Statistical analysis shows that larger plasma-wall outer gap, longer plasma elongation, lower low-hybrid wave heating power and electron cyclotron resonance heating power favor the occurrence of clustered grassy ELMs. Further studies indicate that the generation of clustered grassy ELMs could be correlated with the lower electron temperature in the bulk plasma.
语种英语
WOS记录号IOP:1009-0630-23-9-AC061B
出版者IOP Publishing
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/123972]  
专题中国科学院合肥物质科学研究院
通讯作者DING,Genfan
作者单位1.Institute of Energy, Hefei Comprehensive National Science Center, Hefei 230031, People’s Republic of China
2.University of Science and Technology of China, Hefei 230026, People’s Republic of China
3.Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China
4.Anhui University, Hefei 230601, People’s Republic of China
推荐引用方式
GB/T 7714		 DING,Genfan,YANG,Qingquan,XU,Guosheng,et al. Comparison of natural grassy ELM behavior in favorable/unfavorable Bt in EAST[J]. Plasma Science and Technology,2021,23.
APA DING,Genfan.,YANG,Qingquan.,XU,Guosheng.,LIN,Xin.,YE,Yang.,...&WANG,Liang.(2021).Comparison of natural grassy ELM behavior in favorable/unfavorable Bt in EAST.Plasma Science and Technology,23.
MLA DING,Genfan,et al."Comparison of natural grassy ELM behavior in favorable/unfavorable Bt in EAST".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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