Magnetic Axial Dependency of Hα Emission Location in Peripheral Plasmas of Large Helical Device as Determined by Plasma Polarization Spectroscopy
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概要
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The behavior of hydrogen neutral particles in and around the ergodic layer of Large Helical Device plasmas has been investigated through Hα emission spectral line profiles using plasma polarization spectroscopy (PPS). The PPS technique enables us to quantitatively evaluate emission locations, atomic temperatures and velocity components along the line-of-sight (LOS) for both inner and outer peripheral regions. The emission locations and the LOS components of atomic velocities are determined by varying the magnetic field axis Rax from 3.60 m to 4.00 m, shot by shot. The high intensity region of Hα emissions is localized in the inner ergodic layer for the inward configuration. With an increase in Rax, the high intensity region of Hα emission moves outward.
著者
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MORITA Shigeru
National Insitute for Fusion Science
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Iwamae Atsushi
Department Of Engineering Mechanics And Science Graduate School Of Engineering Kyoto University:(pre
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Sawada Keiji
Faculty Of Engineering Osaka University
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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 Kyoto University, Kyoto 606-8501, Japan
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Sakaue Atsushi
Department of Mechanical Engineering and Science Kyoto University, Kyoto 606-8501, Japan
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Neshi Nobuhiro
Department of Mechanical Engineering and Science Kyoto University, Kyoto 606-8501, Japan
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Nakamura Daisuke
Faculty of Engineering, Shinshu University, Wakasato, Nagano 380-8553, Japan
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Goto Motosh
National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
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HASUO Masahiro
Department of Mechanical Engineering and Science Kyoto University, Kyoto 606-8501, Japan
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IWAMAE Atsushi
Department of Mechanical Engineering and Science Kyoto University, Kyoto 606-8501, Japan
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SAWADA Keiji
Faculty of Engineering, Shinshu University, Wakasato, Nagano 380-8553, Japan
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YANAGIBAYASHI Jun
Department of Engineering Physics, Kyoto University, Kyoto 606-8502, Japan
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