| Spectroscopic Studies on Impurity Transport of Core and Edge Plasmas in LHD |
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| 引用本文： | Shigeru MORITA Motoshi GOTO Sadatsugu MUTO Ryuji KATAI Hisamichi YAMAZAKI Hideaki NOZATO Atsushi IWAMAE Makoto ATAKE Takashi FUJIMOTO Atsushi SAKAUE Hiroaki NISHIMURA Ikuya SAKURAI Chiho MATSUMOTO Akihiro FURUZAWA Yuzuru TAWARA Mitsutoshi ARAMAKI Yuji OKUMURA Koichi SASAKI 龚先祖 李建刚 万宝年 崔正英. Spectroscopic Studies on Impurity Transport of Core and Edge Plasmas in LHD[J]. 等离子体科学和技术, 2006, 8(1): 55-60 |
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| 作者姓名： | Shigeru MORITA Motoshi GOTO Sadatsugu MUTO Ryuji KATAI Hisamichi YAMAZAKI Hideaki NOZATO Atsushi IWAMAE Makoto ATAKE Takashi FUJIMOTO Atsushi SAKAUE Hiroaki NISHIMURA Ikuya SAKURAI Chiho MATSUMOTO Akihiro FURUZAWA Yuzuru TAWARA Mitsutoshi ARAMAKI Yuji OKUMURA Koichi SASAKI 龚先祖 李建刚 万宝年 崔正英 |
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| 作者单位： | [1]National Institute for Fusion Science, Toki 509-5292, Japan [2]Department of Fusion Science, Graduate University for Advanced Studies, Toki 509-5292, Japan [3]National Institute of Advanced Industrial Science and Technology, Tsukuba 305-8563, Japan [4]Department of Engineering Physics, Kyoto University, Kyoto 606-8502, Japan [5]Institute of Laser Engineering, osaka University, Osaka 565-0871, Japan [6]EcoTopia Science Institute, Nagoya University, Nagoya 464-8603, Japan [7]Department of Electrical Engineering and Computer Science, Nagoya University, Nagoya 464-8603, Japan [8]Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China [9]Southwestern Institute of Physics, Chengdu 610041, China |
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| 基金项目： | supported in part by the JSPS-CAS Core University Program in the field of Plasma and Nuclear Fusion. The authors are thankful to all members of the LHD group and all Chinese visitors for their useful discus- sions and technical assistance. |
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| 摘 要： | ![]()
Spectroscopic diagnostics have been extensively developed for studies of impurity and neutral particle transports at core and edge plasmas in LHD. Diagnostics of core plasmas are similar to a tokamak case, i.e., Zeff from visible bremsstrahlung, K-x-ray measurements from xray spectroscopy using Si（Li） detectors and a compact crystal spectrometer, and high-Z impurity diagnostics from VUV spectroscopy using a flat-field EUV spectrometer. A combination of impurity pellet injection and visible bremsstrahlung is an active tool for determination of the diffusion coeffici＇ent D and convective velocity V. Using this tool the spatial structures of D and V are obtained and discussed with a neoclassical effect. On the other hand, the spectroscopic method for edge diagnostics is considerably different from the tokamak case because of the existence of a thick ergodic layer in addition to the z-points necessarily included into the diagnostic chord view. In order to break this negative situation, Zeeman and polarization spectroscopy are adopted to LHD edge plasmas. As a result, 2-dimensional emission contours of HeI and Ha are successfully obtained. Laser absorption spectroscopy is tried to measure hydrogen neutrals directly. Radial profiles of edge impurities are also measured with a mirror-assembled 3 m VUV spectrometer. Recent results of and progress in LHD spectroscopy are briefly reviewed.
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| 关 键 词： | 分光镜学 杂质运输 等离子体 LHD 中性粒子 |
| 收稿时间： | 2005-07-30 |
| 修稿时间： | 2005-07-30 |
Spectroscopic Studies on Impurity Transport of Core and Edge Plasmas in LHD |
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| GONG Xianzu, LI Jiangang, WAN Baonian, CUI Zhengying. Spectroscopic Studies on Impurity Transport of Core and Edge Plasmas in LHD[J]. Plasma Science & Technology, 2006, 8(1): 55-60 |
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| Authors: | GONG Xianzu LI Jiangang WAN Baonian CUI Zhengying |
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| Abstract: | ![]()
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| Keywords: | impurity transport plasma spectroscopy hydrogen neutral |
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