Fe^[14+] and F^[e15]+ spatial distributions in LHD plasma observed with a multiple-viewing-chord extreme-ultraviolet spectrometer
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概要
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We have observed Fe14+ (3s^2 ^1S_0 - 3s3p ^1P_1) and Fe15+ (3s ^2S1/2 - 3p ^2P_[3/2]) emissions from a LHD plasma with a space-resolved extreme-ultraviolet spectrometer. The observed intensity distributions against the viewing chord for the respective emissions are reconstructed to the emission flux distributions in the plasma against the normalized radius of the poloidal cross section with a maximum entropy method. Both of the emissions localize in the periphery region, and the Fe^[14+] emission is located outer side than that of Fe15+. We calculate the charge state distribution of Fe ions against the normalized radius assuming the ionization equilibrium at the electron temperature and density, which are measured by a Thomson scattering method. The calculated result is consistent with the experimental one.
著者
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GOTO Motoshi
National Insitute for Fusion Science
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MORITA Shigeru
National Insitute for Fusion Science
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Hasuo Masahiro
Department Of Engineering Mechanics And Science Graduate School Of Engineering Kyoto University
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Yanagibayashi Jun
Department of Mechanical Engineering and Science, Graduate School of Engineering, Kyoto University, Kyoto 606-8501, Japan
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Dong C.F.
National Institute for Fusion Science, Toki 509-5292, Japan
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YANAGIBAYASHI Jun
Department of Mechanical Engineering and Science Kyoto University, Kyoto 606-8501, Japan
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DONG Chunfeng
National Institute for Fusion Science, Toki 509-5292, Japan
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YANAGIBAYASHI Jun
Department of Engineering Physics, Kyoto University, Kyoto 606-8502, Japan
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