Investigation of Ion Temperature Characteristics in the HT-7 Tokamak

LI Yingying; FU Jia; SHI Yuejiang; WANG Fudi; ZHANG Wei; TI Ang; XU Ping; HUANG Yiyu

Plasma Science and Technology > 2011 > 13(5): 535-540.

LI Yingying, FU Jia, SHI Yuejiang, WANG Fudi, ZHANG Wei, TI Ang, XU Ping, HUANG Yiyu. Investigation of Ion Temperature Characteristics in the HT-7 Tokamak[J]. Plasma Science and Technology, 2011, 13(5): 535-540.

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Investigation of Ion Temperature Characteristics in the HT-7 Tokamak

Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

Funds: supported by the Instruments R&D Project of the Chinese Academy of Sciences (title: Active Beam Spectra Diagnostic), partially supported by National Natural Science Foundation of China ( Nos. 10725523, 10975155), the ITER Relevant Foundation in China _ (No. 2009GB104003).

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Received Date: January 10, 2011

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Abstract

Characteristics of ion temperature measured with Charge-Exchange Recombination Spectroscopy (CXRS) were studied in Ohmic, Lower-Hybrid-Wave (LHW) driven and Ion-Cyclotron-Resonance-Frequency (ICRF) heated plasmas in HT-7. The results indicate that the central ion temperature T_i0 follows the one-third power law in the product of central line-averaged density`n_e and plasma current I_p in Ohmic discharges and is therefore consistent with the Artsimovich scaling law T_i0= K× (I_p×B_t×`n_e ×R²)^1/3. It is shown that there is an appreciable increase of ion temperature during the operation with both LHW and ICRF and that the increment of ion temperature in those shots is mainly due to the energy transfer via collisions between ions and electrons rather that by direct heating of the ions.

Keywords:
charge exchange recombination spectroscopy,
ion temperature,
tokamak

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[1]	Muhammad Ajmal KHAN, Jing LI (李静), Heping LI (李和平), Hafiz Imran Ahmad QAZI. Characteristics of a radio-frequency cold atmospheric plasma jet produced with a hybrid cross-linear-field electrode configuration[J]. Plasma Science and Technology, 2019, 21(5): 55401-055401. DOI: 10.1088/2058-6272/ab004b
[2]	Yuqing YANG (杨宇晴), Xinjun ZHANG (张新军), Yanping ZHAO (赵燕平), Chengming QIN (秦成明), Yan CHENG (程艳), Yuzhou MAO (毛玉周), Hua YANG (杨桦), Jianhua WANG (王健华), Shuai YUAN (袁帅), Lei WANG (王磊), Songqing JU (琚松青), Gen CHEN (陈根), Xu DENG, (邓旭), Kai ZHANG (张开), Baonian WAN (万宝年), Jiangang LI (李建刚), Yuntao SONG (宋云涛), Xianzu GONG (龚先祖), Jinping QIAN (钱金平), Tao ZHANG (张涛). Recent ICRF coupling experiments on EAST[J]. Plasma Science and Technology, 2018, 20(4): 45102-045102. DOI: 10.1088/2058-6272/aaa599
[3]	Yanliang PEI (裴彦良), Liancheng ZHANG (张连成), Yifan HUANG (黄逸凡), Hui YAN (严辉), Xinlei ZHU (朱鑫磊), Zhen LIU (刘振), Keping YAN (闫克平). Discharge electrode configuration effects on the performance of a plasma sparker[J]. Plasma Science and Technology, 2017, 19(9): 95401-095401. DOI: 10.1088/2058-6272/aa7332
[4]	ZHANG Bin (张斌), GAN Kaifu (甘开福), GONG Xianzu (龚先祖), ZHANG Xiaodong (张晓东), WANG Fumin (王福敏), YANG Zhendong (仰振东), CHEN Meiwen (陈美文), WANG Xiaoqiong (王晓琼), the EAST Team. Study of Divertor Heat Patterns Induced by LHCD L-Mode Plasmas Using an Infra-Red Camera System on EAST[J]. Plasma Science and Technology, 2015, 17(10): 831-836. DOI: 10.1088/1009-0630/17/10/04
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[6]	XU Ming (徐明), WEN Yizhi (闻一之), XIE Jinlin (谢锦林), YU Changxuan (俞昌旋), et al.. Internal Magnetic Configuration Measured by ECE Imaging on EAST Tokamak[J]. Plasma Science and Technology, 2013, 15(12): 1194-1196. DOI: 10.1088/1009-0630/15/12/05
[7]	LI Miaohui(李妙辉), DING Bojiang(丁伯江), LI Wenke(李文科), KONG Erhua(孔二华), SHAN Jiafang(单家方), LIU Fukun(刘甫坤), WANG Mao(王茂), XU Handong(徐旵东). An Investigation of LHCD Efficiency and Transformer Recharging in the EAST Tokamak[J]. Plasma Science and Technology, 2012, 14(3): 201-206. DOI: 10.1088/1009-0630/14/3/04
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