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Feasibility of applying the lower cut-off frequency for the density radial coverage extension in EAST reflectometry measurement

文献类型：期刊论文

作者HUANG,Jia1,4; HAN,Xiang4; YE,Kaixuan4; ZHANG,Tao4; WEN,Fei4; WU,Mingfu1,4; GENG,Kangning4; LI,Gongshun4; ZHONG,Fubin1,4; LIU,Yukai2,3
刊名Plasma Science and Technology
出版日期2022-05-01
卷号24
关键词X-mode reflectometry density profile EAST lower cut-off frequency
ISSN号1009-0630
DOI10.1088/2058-6272/ac52e9
通讯作者HUANG,Jia()
英文摘要Abstract The extraordinary mode (X-mode) lower cut-off frequency is proposed for use in the reflectometry diagnostic on ITER for the electron density profile measurement, which is a trade-off between extreme plasma parameters and the accessible probing frequency. In contemporary experiments, the lower cut-off frequency can be identified at the probing frequency below the electron cyclotron frequency (f ce) under certain plasma conditions. We provide here, for the first time, the experimental validation of the use of the lower cut-off frequency for the density profiles via the reflectometry measurement on EAST. The corresponding group delay of the lower cut-off frequency evolves continuously with the upper one, revealing a reasonable radial coverage extension of reflectometry measurement toward the plasma core. It is concluded that the lower cut-off frequency can be used as a supplement to the upper one in the density profile inversion process, which is of particular interest in the high magnetic field and/or density discharge to extend the radial coverage of reflectometry measurement.
语种英语
WOS记录号IOP:PST_24_5_050001
出版者IOP Publishing
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/129639]  
专题中国科学院合肥物质科学研究院
通讯作者HUANG,Jia
作者单位1.University of Science and Technology of China, Hefei 230026, People's Republic of China
2.Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, People's Republic of China
3.Advanced Energy Research Center, Shenzhen University, Shenzhen 518060, People's Republic of China
4.Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
推荐引用方式
GB/T 7714		 HUANG,Jia,HAN,Xiang,YE,Kaixuan,et al. Feasibility of applying the lower cut-off frequency for the density radial coverage extension in EAST reflectometry measurement[J]. Plasma Science and Technology,2022,24.
APA HUANG,Jia.,HAN,Xiang.,YE,Kaixuan.,ZHANG,Tao.,WEN,Fei.,...&,.(2022).Feasibility of applying the lower cut-off frequency for the density radial coverage extension in EAST reflectometry measurement.Plasma Science and Technology,24.
MLA HUANG,Jia,et al."Feasibility of applying the lower cut-off frequency for the density radial coverage extension in EAST reflectometry measurement".Plasma Science and 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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