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タイトル: | Fast ion charge exchange spectroscopy measurement using a radially injected neutral beam on the large helical device |
著者: | Osakabe, Masaki Murakami, Sadayoshi https://orcid.org/0000-0002-2526-7137 (unconfirmed) Yoshinuma, Mikirou Ida, Katsumi Whiteford, Allan Goto, Motoshi Kato, Daiji Kato, Takako Nagaoka, Kenichi Tokuzawa, Tokihiko Takeiri, Yasuhiko Kaneko, Osamu |
キーワード: | charge exchange plasma beam injection heating plasma confinement plasma diagnostics |
発行日: | Oct-2008 |
出版者: | American Institute of Physics |
誌名: | REVIEW OF SCIENTIFIC INSTRUMENTS |
巻: | 79 |
号: | 10 |
論文番号: | 10E519 |
抄録: | An experimental technique to investigate fast ion confinement based on charge exchange spectroscopy of H-light was applied to evaluate the confinement property of perpendicular fast ions in large helical device (LHD). Sensitivities of the H spectra to the pitch angles of injected neutral beams (NBs) and these to the angle between the sight line of the measurement and NB injection path are examined. The energy dependence of the charge exchange cross section significantly affects the observed spectra since the driving NB is injected perpendicular to the magnetic field lines in the geometry of LHD. The measured spectra are compared to the spectra of GNET simulation results and the simulated spectra agreed well with the experimental measurement when we take into account the contribution of halo neutrals. Although it is difficult to obtain the fast ion distribution functions directly, this technique provides useful experimental data in benchmarking simulation codes. |
著作権等: | Copyright 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. |
URI: | http://hdl.handle.net/2433/84607 |
DOI(出版社版): | 10.1063/1.2968695 |
PubMed ID: | 19044501 |
関連リンク: | http://link.aip.org/link/?RSINAK/79/10E519/1 |
出現コレクション: | 学術雑誌掲載論文等 |
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