Nagaoka Kenichi 永岡賢一

… Alternative Names

NAGAOKA Kenichi 永岡賢一

永岡賢一ナガオカケンイチ

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Researcher Number	20353443
Other IDs	https://orcid.org/0000-0002-5892-6047
Affiliation (Current)	2024: 核融合科学研究所, 研究部, 教授
Affiliation (based on the past Project Information) *help	2023 – 2024: 核融合科学研究所, 研究部, 教授 2019 – 2022: 核融合科学研究所, ヘリカル研究部, 教授 2014 – 2018: 核融合科学研究所, ヘリカル研究部, 准教授 2016: 核融合科学研究所, 大学共同利用機関等の部局等, 准教授 2011 – 2012: 核融合科学研究所, ヘリカル研究部, 助教 … More 2007 – 2009: 核融合科学研究所, 大型ヘリカル研究部, 助教 2006: 核融合科学研究所, 大型ヘリカル研究部, 助手 2003 – 2004: 核融合科学研究所, 大型ヘリカル研究部, 助手 Less
Review Section/Research Field	Principal Investigator Plasma science / Medium-sized Section 14:Plasma science and related fields / Nuclear fusion studies / Astronomy Except Principal Investigator Medium-sized Section 14:Plasma science and related fields / Nuclear fusion studies / Plasma science / Broad Section C / Basic Section 14020:Nuclear fusion-related
Keywords	Principal Investigator ペアプラズマ / ビーム引き出し界面 / ビーム光学 / ビーム集束性 / 負イオン源 / 負イオンビーム / 回転 / 構造形成 / 電気対流 / 乱流 … More / ビーム光学安定性 / 負イオンビーム界面 / 負イオンビーム引き出し界面 / 粒子ダイナミクス / 準定常負イオン源 / RFプラズマ / 高周波電磁場 / 負イオンプラズマメニスカス / 外部制御 / シース界面 / 高周波 / 負イオンビーム集束性 / イオン性ペアプラズマ / 非ガウスビーム成分 / ファラデーカップアレイ / ペッパーポットエミッタンスメータ / ビーム引出界面 / ビーム位相空間構造 / RF負イオン源 / 水素負イオンビーム / ペアイオンプラズマ / メニスカス / 負イオン / プラズマメニスカス / 位相空間構造 / ビーム発散角 / 位相統計解析 / 高速イオン異常輸送 / α加熱 / アルベン固有モード / 波動粒子相互作業 / 高エネルギー粒子 / 磁場閉じ込め核融合 / アルベン波 / 波動粒子相互作用 / 高速イオン / スカラー場 / 軸性ベクトル場 / 対象性の破れ / 乱流輸送 / 対称性 / 乱流構造形成 / 回転乱流 / 対称性の破れ / 輸送 / プラズマ / 天文学 / 磁化プラズマ / 乱流拡散 / 回転球殻 / 流体力学 / 液晶 / 太陽対流層 / 対流 / CHS / 自発的構造形成 / プラズマ流速測定 / プラズマ閉じ込め / 周辺輸送障壁 / プラズマ流 / 方向性プローブ … More Except Principal Investigator 磁気ノズル / 電気推進 / プラズマ・核融合 / プラズマ / プラズマ推進 / 磁場閉じ込め核融合 / プラズマ波動 / ヘリコンスラスタ / 電子反磁性効果 / プラズマ揺動 / 高周波プラズマ / 外挿モデル / 液晶乱流 / プラズマ乱流輸送 / 閉じ込め磁場配位 / ECH/ECCD / MHD不安定性 / 高エネルギー粒子 / プラズマ流 / ディタッチメント / 運動量輸送 / 仕事関数 / イオン引き出し / 中性粒子入射加熱装置 / ペアイオンプラズマ / NBI / 負イオン / 負イオンダイナミクス / イオン性プラズマ / プラズマ加熱 / 中性粒子ビーム入射 / 負イオン源 / ラバールノズル / プラズマ加速 / ロケット / 惑星探査 / 非等方圧力 / 磁場閉じ込め / ヘリカル / MHD平衡・安定性 / ビーム圧力 / 波・粒子相互作用 / 高速イオン異常輸送 / 高エネルギー粒子輸送 / アルフベン固有モード / プラズマ物理 Less

Development of extrapolatable plasma transport model based on solution space structure of turbulence
- Principal Investigator
  
  沼波政倫
- Project Period (FY)
  2024 – 2028
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 14020:Nuclear fusion-related
- Research Institution
  National Institute for Fusion Science
Research on a high-power magnetic nozzle plasma thruster
- Principal Investigator
  
  高橋和貴
- Project Period (FY)
  2023 – 2027
- Research Category
  
  Grant-in-Aid for Scientific Research (S)
- Review Section
  
  Broad Section C
- Research Institution
  Tohoku University
Plasma detachment from a magnetic nozzle driven by instabilities, waves, and turbulence
- Principal Investigator
  
  高橋和貴
- Project Period (FY)
  2023
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Review Section
  
  Medium-sized Section 14:Plasma science and related fields
- Research Institution
  Tohoku University
Control of Energetic-Particle-Driven MHD Instabilities by External Actuators
- Principal Investigator
  
  長崎百伸
- Project Period (FY)
  2022 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Review Section
  
  Medium-sized Section 14:Plasma science and related fields
- Research Institution
  Kyoto University
Plasma momentum transport and detachment from a magnetic nozzle
- Principal Investigator
  
  Takahashi Kazunori
- Project Period (FY)
  2019 – 2022
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Review Section
  
  Medium-sized Section 14:Plasma science and related fields
- Research Institution
  Tohoku University
Beam extraction boundary physics and control of particle dynamics for steady state negative ion sourcesPrincipal Investigator
- Principal Investigator
  
  永岡賢一
- Project Period (FY)
  2018 – 2024
- Research Category
  
  Fund for the Promotion of Joint International Research (Fostering Joint International Research (B))
- Review Section
  
  Medium-sized Section 14:Plasma science and related fields
- Research Institution
  National Institute for Fusion Science
Investigation of boundary structure of ionic pair plasma and development of high perfomance negative ion beamPrincipal Investigator
- Principal Investigator
  
  Kenichi Nagaoka
- Project Period (FY)
  2017 – 2019
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Plasma science
- Research Institution
  National Institute for Fusion Science
Understanding a magnetic nozzle plasma flow dynamics and extension to a high power electric propulsion
- Principal Investigator
  
  Ando Akira
- Project Period (FY)
  2014 – 2017
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Research Field
  
  Plasma science
- Research Institution
  Tohoku University
Exeprimental study of turbulence transport with symmetry breakingPrincipal Investigator
- Principal Investigator
  
  Nagaoka Kenichi
- Project Period (FY)
  2014 – 2016
- Research Category
  
  Grant-in-Aid for Challenging Exploratory Research
- Research Field
  
  Plasma science
- Research Institution
  National Institute for Fusion Science
Control of anomalous transport of fast ions via external control of Alfven eigenmodePrincipal Investigator
- Principal Investigator
  
  Nagaoka Kenichi
- Project Period (FY)
  2014 – 2016
- Research Category
  
  Grant-in-Aid for Young Scientists (A)
- Research Field
  
  Nuclear fusion studies
- Research Institution
  National Institute for Fusion Science
Investigation of negative ion extraction mechanism from a high-density ionic plasma
- Principal Investigator
  
  Takeiri Yasuhiko
- Project Period (FY)
  2013 – 2015
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Research Field
  
  Nuclear fusion studies
- Research Institution
  National Institute for Fusion Science
Experimental simulation of large-scale flow field in solar convection zonePrincipal Investigator
- Principal Investigator
  
  永岡賢一
- Project Period (FY)
  2011 – 2012
- Research Category
  
  Grant-in-Aid for Challenging Exploratory Research
- Research Field
  
  Astronomy
- Research Institution
  National Institute for Fusion Science
Interaction of Alfven eigen-mode on energetic-particles in helical systems.
- Principal Investigator
  
  OSAKABE Masaki
- Project Period (FY)
  2006 – 2009
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Plasma science
- Research Institution
  National Institute for Fusion Science
Effects of beam pressure on the MHD equilibria and stabilities in high beta helical plasmas
- Principal Investigator
  
  WATANABE Kiyomasa
- Project Period (FY)
  2006 – 2009
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Nuclear fusion studies
- Research Institution
  National Institute for Fusion Science
磁場閉じ込めプラズマの3次元速度場の構造と粘性に関する研究Principal Investigator
- Principal Investigator
  
  永岡賢一
- Project Period (FY)
  2003 – 2004
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Plasma science
- Research Institution
  National Institute for Fusion Science

[Journal Article] Langmuir-probe measurement through the plasma grid aperture of hydrogen negative ion source2024
- Author(s)
  Rattanawongnara E.、Osakabe M.、Tsumori K.、Nakano H.、Nagaoka K.、Ikeda K.、Takeiri Y.
- Journal Title
  
  Journal of Instrumentation
  
  Volume: 19 Issue: 02 Pages: C02037-C02037
- DOI
  10.1088/1748-0221/19/02/c02037
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18KK0080, KAKENHI-PROJECT-23H05442
[Journal Article] Experimental study of the effect of geodesic curvature on turbulent transport in magnetically confined plasma2024
- Author(s)
  Nishimoto S、Nagaoka K、Nakata M、Yoshimura S、Tanaka K、Yokoyama M、Nunami M、Tokuzawa T、Suzuki C、Seki R、Yoshinuma M、Motojima G、Ida K、Suzuki Y
- Journal Title
  
  Plasma Physics and Controlled Fusion
  
  Volume: 66 Issue: 4 Pages: 045010-045010
- DOI
  10.1088/1361-6587/ad27f0
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23H05442
[Journal Article] Analysis of the ECH effect on EPM/AE stability in Heliotron J plasma using a Landau closure model2023
- Author(s)
  J. Varela, K. Nagasaki, S. Kobayashi, K. Nagaoka, P. Adulsiriswad, A. Cappa, S. Yamamoto, K.Y. Watanabe, D.A. Spong, Garcia, Y. Ghai and J. Ortiz
- Journal Title
  
  Nuclear Fusion
  
  Volume: 63 Issue: 2 Pages: 026009-026009
- DOI
  10.1088/1741-4326/aca98e
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22H00117, KAKENHI-PROJECT-19H01875
[Journal Article] New Method to Evaluate Negative-Ion Density Using Conventional Langmuir Probe2023
- Author(s)
  RATTANAWONGNARA Engrhyt、OSAKABE Masaki、MASAKI Shingo、TSUMORI Katsuyoshi、NAKANO Haruhisa、NAGAOKA Kenichi、IKEDA Katsunori、TAKEIRI Yasuhiko
- Journal Title
  
  Plasma and Fusion Research
  
  Volume: 18 Issue: 0 Pages: 1401020-1401020
- DOI
  10.1585/pfr.18.1401020
- ISSN
  1880-6821
- Year and Date
  2023-04-05
- Language
  English
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18KK0080
[Journal Article] Magnetic Nozzle Radiofrequency Plasma Systems for Space Propulsion, Industry, and Fusion Plasmas2023
- Author(s)
  TAKAHASHI Kazunori、CHARLES Christine、BOSWELL Rod W、EMOTO Kazuma、TAKAO Yoshinori、HARA Shiro、NAKANO Haruhisa、NAGAOKA Kenichi、TSUMORI Katsuyoshi
- Journal Title
  
  Plasma and Fusion Research
  
  Volume: 18 Issue: 0 Pages: 2501050-2501050
- DOI
  10.1585/pfr.18.2501050
- ISSN
  1880-6821
- Year and Date
  2023-06-30
- Language
  English
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23H05442
[Journal Article] Abundance ratio of multiple velocity distribution components in a single negative ion beamlet produced by a cesium-seeded negative ion source2022
- Author(s)
  Haba Yasuaki、Aramaki Mitsutoshi、Tsumori Katsuyoshi、Osakabe Masaki、Ikeda Katsunori、Nakano Haruhisa、Nagaoka Kenichi
- Journal Title
  
  AIP Advances
  
  Volume: 12 Issue: 3 Pages: 035223-035223
- DOI
  10.1063/5.0083300
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18KK0080, KAKENHI-PROJECT-22K14023, KAKENHI-PROJECT-21K20357, KAKENHI-PROJECT-19H01883
[Journal Article] Beam instability in the vicinity of beam extraction region of negative ion source2022
- Author(s)
  Nagaoka K.、Nakamoto R.、Sasaki T.、Hamajima T.、Nakano H.、Ikeda K.、Fujiwara Y.、Osakabe M.、Takeiri Y.、Tsumori K.
- Journal Title
  
  Journal of Physics: Conference Series
  
  Volume: 2244 Issue: 1 Pages: 012043-012043
- DOI
  10.1088/1742-6596/2244/1/012043
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19H01883, KAKENHI-PROJECT-18KK0080
[Journal Article] Difference of co-extracted electron current and beam acceleration in a negative ion source with hydrogen-isotope ions2022
- Author(s)
  Ikeda K.、Tsumori K.、Nakano H.、Nagaoka K.、Takeiri Y.、Masaki S.、Rattanawongnara E.、Osakabe M.
- Journal Title
  
  Journal of Physics: Conference Series
  
  Volume: 2244 Issue: 1 Pages: 012060-012060
- DOI
  10.1088/1742-6596/2244/1/012060
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19H01883, KAKENHI-PROJECT-18KK0080
[Journal Article] Study of the charged particle flow near the plasma grid in negative ion source2022
- Author(s)
  Masaki S.、Nakano H.、Rattanawongnara E.、Nagaoka K.、Ikeda K.、Fujiwara Y.、Osakabe M.、Wada M.、Tsumori K.
- Journal Title
  
  Journal of Physics: Conference Series
  
  Volume: 2244 Issue: 1 Pages: 012059-012059
- DOI
  10.1088/1742-6596/2244/1/012059
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19H01883, KAKENHI-PROJECT-18KK0080
[Journal Article] Study of negative ion beam emittance characteristic using 3D PIC-MCC simulation2022
- Author(s)
  K. Miyamoto, K. Nagaoka, A. Hatayama, K. Hoshino, H. Nakano, T.Shibata, K. Tsumori
- Journal Title
  
  Journal of Physics: Conference Series
  
  Volume: 2244 Issue: 1 Pages: 012040-012040
- DOI
  10.1088/1742-6596/2244/1/012040
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19K03783, KAKENHI-PROJECT-19H01883, KAKENHI-PROJECT-18KK0080
[Journal Article] Comparison of ion source plasma responses to extraction grid bias between hydrogen and deuterium operations in NIFS-RNIS2022
- Author(s)
  Nakano H、Masaki S、Rattanawongnara E、Tsumori K、Ikeda K、Hamajima T、Nagaoka K、Osakabe M
- Journal Title
  
  Journal of Physics: Conference Series
  
  Volume: 2244 Issue: 1 Pages: 012046-012046
- DOI
  10.1088/1742-6596/2244/1/012046
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-19H01883, KAKENHI-PROJECT-18KK0080
[Journal Article] Nonuniform plasma meniscus modelling based on backward calculation of negative ion beamlet2022
- Author(s)
  M. Kisaki, K. Nagaoka, J. Slief, Y. Haba, R. Nakamoto, K. Tsumori, H. Nakano, K. Ikeda, M. Osakabe
- Journal Title
  
  Nuclear Fusion
  
  Volume: 62 Issue: 10 Pages: 106031-106031
- DOI
  10.1088/1741-4326/ac8604
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-22K14023, KAKENHI-PROJECT-21K20357, KAKENHI-PROJECT-18KK0080
[Journal Article] Challenges toward improvement of deuterium-injection power in the Large Helical Device negative-ion-based NBIs2022
- Author(s)
  Tsumori K.、Ikeda K.、Kisaki M.、Nakano H.、Nagaoka K.、Fujiwara Y.、Kamio S.、Osakabe M.
- Journal Title
  
  Nuclear Fusion
  
  Volume: 62 Issue: 5 Pages: 056016-056016
- DOI
  10.1088/1741-4326/ac2d59
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18KK0080
[Journal Article] Development of the directional Langmuir probe for the charged particle flow measurement2021
- Author(s)
  Masaki S.、Nakano H.、Kisaki M.、Rattanawongnara E.、Nagaoka K.、Ikeda K.、Fujiwara Y.、Osakabe M.、Tsumori K.
- Journal Title
  
  AIP Conference Proceedidngs
  
  Volume: 2373 Pages: 0900031-0900037
- DOI
  10.1063/5.0058837
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18KK0080, KAKENHI-PROJECT-19H01883
[Journal Article] Validation of the distribution of stripping loss neutrals in the accelerator of the negative ion source2021
- Author(s)
  Ikeda K.、Kisaki M.、Nakano H.、Tsumori K.、Nagaoka K.、Fujiwara Y.、Masaki S.、Rattanawongnara E.、Osakabe M.
- Journal Title
  
  AIP Conference Proceedidngs
  
  Volume: 2373 Pages: 0600011-0600018
- DOI
  10.1063/5.0057443
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18KK0080, KAKENHI-PROJECT-19H01883
[Journal Article] Deuterium experiment with large-scale negative ion source for large helical device2020
- Author(s)
  Nakano H.、Kisaki M.、Ikeda K.、Tsumori K.、Nagaoka K.、Haba Y.、Masaki S.、Fujiwara Y.、Kamio S.、Osakabe M.
- Journal Title
  
  Japanese Journal of Applied Physics
  
  Volume: 59 Issue: SH Pages: SHHC09-SHHC09
- DOI
  10.35848/1347-4065/ab80a7
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18KK0080, KAKENHI-PROJECT-19H01883
[Journal Article] Characterisation of negative ion beam focusing based on phase space structure2020
- Author(s)
  Haba Yasuaki、Nagaoka Kenichi、Tsumori Katsuyoshi、Kisaki Masashi、Nakano Haruhisa、Ikeda Katsunori、Osakabe Masaki
- Journal Title
  
  New Journal of Physics
  
  Volume: 22 Issue: 2 Pages: 023017-023017
- DOI
  10.1088/1367-2630/ab6d41
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18KK0080, KAKENHI-PROJECT-17H03002
[Journal Article] Response of beam focusing to plasma fluctuation in a filament-arc-type negative ion source2020
- Author(s)
  Haba Y.、Nagaoka K.、Tsumori K.、Kisaki M.、Takahashi K.、Nakano H.、Ikeda K.、Yoshimura S.、Osakabe M.
- Journal Title
  
  Japanese Journal of Applied Physics
  
  Volume: 59 Issue: SH Pages: SHHA01-SHHA01
- DOI
  10.35848/1347-4065/ab7473
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18KK0080, KAKENHI-PROJECT-17H03002
[Journal Article] Exploring deuterium beam operation and the behavior of the co-extracted electron current in a negative-ion-based neutral beam injector2019
- Author(s)
  Ikeda K.、Tsumori K.、Nakano H.、Kisaki M.、Nagaoka K.、Kamio S.、Fujiwara Y.、Haba Y.、Osakabe M.
- Journal Title
  
  Nuclear Fusion
  
  Volume: 59 Issue: 7 Pages: 076009-076009
- DOI
  10.1088/1741-4326/ab0fca
- NAID
  120007116698
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18KK0080
[Journal Article] Extension of high power deuterium operation of negative ion based neutral beam injector in the large helical device2019
- Author(s)
  Ikeda K.、Tsumori K.、Nagaoka K.、Nakano H.、Kisaki M.、Fujiwara Y.、Kamio S.、Haba Y.、Masaki S.、Osakabe M.
- Journal Title
  
  Review of Scientific Instruments
  
  Volume: 90 Issue: 11 Pages: 113322-113322
- DOI
  10.1063/1.5128529
- NAID
  120007116700
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18KK0080
[Journal Article] Spatiotemporal oscillation of an ion beam extracted from a potential-oscillating plasma source2019
- Author(s)
  Takahashi Kazunori、Imagi Tsuyoshi、Ishitomi Masashi、Nagaoka Kenichi、Haba Yasuaki、Nakano Haruhisa、Ando Akira、Kisaki Masashi、Tsumori Katsuyoshi、Ikeda Katsunori
- Journal Title
  
  New Journal of Physics
  
  Volume: 21 Issue: 9 Pages: 093043-093043
- DOI
  10.1088/1367-2630/ab3f70
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-18KK0080, KAKENHI-PROJECT-17H03002, KAKENHI-PROJECT-19H00663, KAKENHI-PROJECT-18H01197
[Journal Article] Development of a dual beamlet monitor system for negative ion beam measurements2018
- Author(s)
  Haba Y.、Nagaoka K.、Tsumori K.、Kisaki M.、Nakano H.、Ikeda K.、Fujiwara Y.、Kamio S.、Yoshimura S.、Osakabe M.
- Journal Title
  
  Review of Scientific Instruments
  
  Volume: 89 Issue: 12 Pages: 123303-123303
- DOI
  10.1063/1.5056260
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17H03002
[Journal Article] Caesiated H- source operation with helium2018
- Author(s)
  Tsumori K.、Wada M.、Nakano H.、Kisaki M.、Ikeda K.、Haba Y.、Nagaoka K.、Kamio S.、Fujiwara Y.、Osakabe M.
- Journal Title
  
  AIP Conference Proceedings
  
  Volume: 2052 Pages: 040015-040015
- DOI
  10.1063/1.5083749
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-17H03002, KAKENHI-PROJECT-17H03512
[Journal Article] Charged particle flows in the beam extraction region of a negative ion source for NBI2016
- Author(s)
  S. Geng, K. Tsumori, H. Nakano, M. Kisaki, K. Ikeda, M. Osakabe, K. Nagaoka, Y. Takeiri, M. Shibuya, and O. Kaneko
- Journal Title
  
  Review of Scientific Instruments
  
  Volume: 87 Issue: 2
- DOI
  10.1063/1.4931796
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] Improvement of accelerator of negative ion source on the Large Helical Device2016
- Author(s)
  M. Kisaki, K. Ikeda, M. Osakabe, K. Tsumori, H. Nakano, S. Geng, K. Nagaoka, O. Kaneko, and Y. Takeiri
- Journal Title
  
  Review of Scientific Instruments
  
  Volume: 87 Issue: 2
- DOI
  10.1063/1.4936249
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] Installation of Spectrally Selective Imaging System in RF Negative Ion Source2016
- Author(s)
  K. Ikeda, D. Wunderlich, U. Fantz, B. Heinemann, M. Kisaki, K. Nagaoka, H. Nakano, M. Osakabe, K. Tsumori, O. Kaneko and Y. Takeiri
- Journal Title
  
  Review of Scientific Instruments
  
  Volume: 87 Issue: 2
- DOI
  10.1063/1.4932987
- NAID
  120007116699
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] Negative ion production and beam extraction processes in a large ion source2016
- Author(s)
  K. Tsumori, K. Ikeda, H. Nakano, M. Kisaki, S. Geng, M. Wada, K. Sasaki, S. Nishiyama, M. Goto, G.Serianni, P. Agostinetti, E. Sartori, M. Brombin, P. Veltri, C. Wimmer, K. Nagaoka, M. Osakabe, Y. Takeiri, and O. Kaneko
- Journal Title
  
  Review of Scientific Instruments
  
  Volume: 87 Issue: 2
- DOI
  10.1063/1.4938254
- Peer Reviewed / Acknowledgement Compliant / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] Cavity Ringdown Technique for negative-hydrogen-ion measurement in ion source for neutral beam injector2016
- Author(s)
  H. Nakano, K. Tsumori, M. Shibuya, S. Geng, M. Kisaki, K. Ikeda, K. Nagaoka, M. Osakabe, Y, Takeiri and O. Kaneko
- Journal Title
  
  Journal of Instrumentation
  
  Volume: 11
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] Research progress on ionic plasmas generated in an intense hydrogen negative ion source2015
- Author(s)
  Y. Takeiri, K. Tsumori, K. Ikeda, H. Nakano, M. Kisaki, K. Nagaoka, T. Tokuzawa, S. Geng, M. Osakabe, O. Kaneko, T. Kondo, M. Sato, M. Shibuya, S. Komada and H. Sekiguchi,
- Journal Title
  
  AIP Conference Proceedings
  
  Volume: 1655 Pages: 060004-060004
- DOI
  10.1063/1.4916473
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] Evaluation of Negative Ion Distribution Changes by Image Processing Diagnostic2015
- Author(s)
  K. Ikeda, H. Nakano, K. Tsumori, M. Kisaki, S. Geng, K. Nagaoka, Y. Takeiri, O. Kaneko
- Journal Title
  
  AIP Conference Proceedings
  
  Volume: 1655 Pages: 040005-040005
- DOI
  10.1063/1.4916447
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] Spatial Distributions of Charged Particles and Plasma Potential before and during Beam Extraction in a Negative Hydrogen Ion Source for NBI2015
- Author(s)
  Shaofei GENG, Katsuyoshi TSUMORI, Haruhisa NAKANO, Masashi KISAKI, Yasuhiko TAKEIRI, Masaki OSAKABE, Katsunori IKEDA, Ken-ichi NAGAOKA, Osamu KANEKO, Masayuki SHIBUYA and NIFS NBI Group
- Journal Title
  
  Plasma and Fusion Research
  
  Volume: 10 Issue: 0 Pages: 3405016-3405016
- DOI
  10.1585/pfr.10.3405016
- NAID
  130005302874
- ISSN
  1880-6821
- Language
  English
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] Laser photodetachment diagnostics of a 1/3-size negative hydrogen ion source for NBI2015
- Author(s)
  S. Geng, K. Tsumori, H. Nakano, M. Kisaki, K. Ikeda, Y. Takeiri, M. Osakabe, K. Nagaoka, and O. Kaneko
- Journal Title
  
  AIP Conference Proceedings
  
  Volume: 1655 Pages: 040014-040014
- DOI
  10.1063/1.4916456
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] Hydrogen Atom Temperature Measured with Wavelength-Modulated Laser Absorption Spectroscopy in Large Scale Filament Arc negative Hydrogen Ion Source2015
- Author(s)
  H. Nakano, S. Nishiyama, M. Goto, K. Tsumori, M. Kisaki, K. Ikeda, K. Nag aoka, M. Osakabe, Y. Takeiri, O. Kaneko, K. Sasaki
- Journal Title
  
  AIP Conference Proceedings
  
  Volume: 1655 Pages: 020018-020018
- DOI
  10.1063/1.4916427
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-24540529, KAKENHI-PROJECT-25249134, KAKENHI-PROJECT-25800307
[Journal Article] Characteristic of plasma grid bias in large-scaled negative ion source2014
- Author(s)
  M. Kisaki, K. Tsumori, K. Ikeda, H. Nakano, M. Osakabe, K. Nagaoka, Y. Takeiri and O. Kaneko
- Journal Title
  
  Review of Scientific Instruments
  
  Volume: 85 Issue: 2
- DOI
  10.1063/1.4854295
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] Development of spectrally selective imaging system for negative hydrogen ion source2014
- Author(s)
  K. Ikeda, H. Nakano, K. Tsumori, M. Kisaki, K. Nagaoka, M. Osakabe, Y. Takeiri, and O. Kaneko
- Journal Title
  
  Review of Scientific Instruments
  
  Volume: 85 Issue: 2
- DOI
  10.1063/1.4842318
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] Operation Summary of Neutral Beam Injection System in the 16th Campaign2013
- Author(s)
  Takeiri, Y., Tsumori, K., Osakabe, M., Ikeda, K., Nagaoka, K., Nakano, H., Kisaki, M., Asano, E., Kondo, T., Sato, M., Shibuya, M., Komada, S., Sekiguchi, H.
- Journal Title
  
  Annual Report of National Institute for Fusion Science
  
  Volume: April 2012 - March 2013 Pages: 199-199
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] Identification of the extraction structure of H- ions by Hα imaging spectroscopy2013
- Author(s)
  K Ikeda, H Nakano, K Tsumori, M Kisaki, K Nagaoka, M Osakabe, Y Takeiri and O Kaneko
- Journal Title
  
  New Journal of Physics
  
  Volume: 15 Issue: 10 Pages: 103026-103026
- DOI
  10.1088/1367-2630/15/10/103026
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] H- Density Profile Parallel to Plasma Grid in H- Source for Neutral Beam2013
- Author(s)
  Nakano, H., Tsumori, K., Kisaki, M., Shibuya, M., Ikeda, K., Nagaoka, K., Osakabe, M., Kaneko, O., Asano, E., Kondo, T., Sato, M., Sekiguchi, H., Komada, S., and Takeiri, Y.
- Journal Title
  
  Annual Report of National Institute for Fusion Science
  
  Volume: April 2012 - March 2013 Pages: 201-201
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] Visualization of H<sup>−</sup> Dynamics in Extraction Region of Negative-Ion Source by H<sub>α</sub> Imaging Spectroscopy2013
- Author(s)
  Katsunori IKEDA, Haruhisa NAKANO, Katsuyoshi TSUMORI, Masashi KISAKI, Kenichi NAGAOKA, Masaki OSAKABE, Yasuhiko TAKEIRI and Osamu KANEKO
- Journal Title
  
  Plasma and Fusion Research
  
  Volume: 8 Issue: 0 Pages: 1301036-1301036
- DOI
  10.1585/pfr.8.1301036
- NAID
  130003366292
- ISSN
  1880-6821
- Language
  English
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] Polar Distribution of Ion and Electron Saturation Currents of Electro-Negative Plasma in Caesium-Seeded Negative Ion Source2013
- Author(s)
  Tsumori, K., Nakano, H., Kisaki, M., Ikeda, K., Nagaoka, K., Osakabe, M., Takeiri, Y., Kaneko, O., Shibuya, M., Asano, E., Kondo, T., Sato, M., Sekiguchi and H., Komada, S.
- Journal Title
  
  Annual Report of National Institute for Fusion Science
  
  Volume: April 2012 - March 2013 Pages: 202-202
- Data Source
  KAKENHI-PROJECT-25249134
[Journal Article] Fast-ion confinement studies on LHD2010
- Author(s)
  M. Osakabe, M. Isobe, S. Murakami, S. Kobayashi, K. Saito, R. Kumazawa, T. Mutoh, T. Ozaki, M. Nishiura, E. Veshev, T. Seki, Y. Takeiri, O. Kaneko, K. Nagaoka, T. Tokuzawa, K. Ogawa, K. Toi, S. Yamamoto, M. Sasao, T. Watanabe, LHD experiment group
- Journal Title
  
  to appear in the LHD special issue of Fusion Science and Technology 58,(9pages)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340189
[Journal Article] Evaluation of fast-ion confinement using radially injected neutral beam on LHD2010
- Author(s)
  M.Osakabe, K.Nagaoka, Y.Takeiri, 他
- Journal Title
  
  Plasma and Fusion Research 5(掲載確定, To be publish ed)
  
  Pages: 4-4
- NAID
  130000669032
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340189
[Journal Article] Fast-ion confinement studies on LHD2010
- Author(s)
  M.Osakabe, Y.Takeiri, K.Nagaoka, 他
- Journal Title
  
  Fusion Science and Technology 58(掲載確定, To be publish ed)
  
  Pages: 9-9
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340189
[Journal Article] Fast ion measurement using a hybrid directional probe in the large helical device2008
- Author(s)
  K. Nagaoka, K.Y. Watanabe, M. Osakabe, Y. Takeiri, et. al.
- Journal Title
  
  Rev. Sci. Instrum. 79
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340189
[Journal Article] Fast ion charge exchange spectroscopy measurement using a radially injected neutral beam on the large helical device2008
- Author(s)
  M. Osakabe, S. Murakami, M. Yoshinuma, K. Ida, A. Whiteford, M. Goto, D. Kato, T. Kato, K. Nagaoka, T. Tokuzawa, Y. Takeiri, et. al.
- Journal Title
  
  Rev. Sci. Instrum. 79
- NAID
  120006653838
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340189
[Journal Article] Radial Transport Characteristics of Fast Ions Due to Energetic Particle Modes inside Last Closed Flux Surface in the Compact Helical System2008
- Author(s)
  K. Nagaoka, 他
- Journal Title
  
  Phys.Rev.Letters 100
  
  Pages: 65005-65005
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340189
[Journal Article] Radial Transport Characteristics of Fast Ions Due to Energetic-Particle Modes inside the Last Closed-Flux Surface in the Compact Helical System2008
- Author(s)
  K. Nagaoka, M. Isobe, K. Toi, A. Shimizu, A. Fujisawa, S. Ohshima, H. Nakano, M. Osakabe, Y. Todo, et. al.
- Journal Title
  
  Phys. Rev. Lettres 100
  
  Pages: 65005-65005
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340189
[Journal Article] Local observations offast ion responses to energetic particle modesusing a directional probe in the Compact HelicalSystem (CHS)2008
- Author(s)
  K. Nagaoka, M. Isobe, K. Toi, K. Goto, T. Ito, Y. Todo, M. Osakabe, S. Ohshima, A. Shimizu, A. Fujisawa, H. Nakano, Y. Takeiri, K.Y. Watanabe, T. Akiyama, Y. Yoshimura, C. Suzuki, S. Nishimura, K. Matsuoka, S. Okamura and the CHS experimental group
- Journal Title
  
  Nucl. Fusion 48巻
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18360445
[Journal Article] Local observations of fast ion responses to energetic particle modes using a directional probe in the Compact Helical System (CHS)2008
- Author(s)
  K.Nagaoka, M.Isobe, K.Toi, K.Goto, T.Ito, Y.Todo, M.Osakabe, S.Ohshima, A.Shimizu, A.Fujisawa, H.Nakano, Y.Takeiri, K.Y.Watanabe, T.Akiyama, Y.Yoshimura, C.Suzuki, S.Nishimura, K.Matsuoka, S.Okamura, the CHS experimental group
- Journal Title
  
  Nuclear Fusion 48巻
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18360445
[Journal Article] Fast ion charge exchange spectroscopy measurement using a radially injected neutral beam on the large helicaldevice2008
- Author(s)
  M. Osakabe, S. Murakami, M.Yoshinuma, K. Ida, A. Whiteford, M.Goto, D. Kato, T. Kato, K. Nagaoka, T.Tokuzawa, Y. Takeiri, et.al.
- Journal Title
  
  Rev. Sci. Instrum 79
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340189
[Journal Article] Local observations of fast ion responses to energetic particle modes using a directional probe in the Compact Helical System (CHS)2008
- Author(s)
  K. Nagaoka, M. Isobe, K. Toi, K. Goto, T.Ito, Y. Todo, M. Osakabe, S. Ohshima, A.Shimizu, A. Fujisawa, H. Nakano, Y.Takeiri, et.al.
- Journal Title
  
  Nuclear Fusion 48
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340189
[Journal Article] Fast ion measurement using a hybrid directional probe in the large helical device2008
- Author(s)
  K. Nagaoka, K. Y. Watanabe, M. Osakabe, Y. Takeiri, et.al.
- Journal Title
  
  Rev. Sci. Instrum 79
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340189
[Journal Article] Fastion measurement using a hybrid directional probe in the large helical device2008
- Author(s)
  K. Nagaoka, 他
- Journal Title
  
  Review of Scientific Instruments 79
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340189
[Journal Article] Radial Transport Characteristics of Fast Ions Due to Energetic-Particle Modes inside the Last Closed-Flux Surface in the Compact Helical System2008
- Author(s)
  K. Nagaoka, M. Isobe, K. Toi, A. Shimizu, A. Fujisawa, S. Ohshima, H. Nakano, M. Osakabe, Y. Todo, et.al.
- Journal Title
  
  Phys. Rev. Lettres 100
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340189
[Journal Article] Local observations of fast ion responses to energetic particle modes using a directional probe in the Compact Helical System (CHS)2008
- Author(s)
  K. Nagaoka, M. Isobe, K. Toi, K. Goto, T. Ito, Y. Todo, M. Osakabe, S. Ohshima, A. Shimizu, A. Fujisawa, H. Nakano, Y. Takeiri, et. al.
- Journal Title
  
  Nuclear Fusion 48
  
  Pages: 84006-84006
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340189
[Journal Article] Calibrations of Fast Ion Flux Measurement Using a Hybrid Directional Probe2007
- Author(s)
  K. Nagaoka, et. al.
- Journal Title
  
  Plasma Fusion Res. vol.2
- NAID
  130002058981
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18360445
[Journal Article] Experimental observations of enhanced radial transport of Energetic Particles with Alfven Eigen mode on LHD2006
- Author(s)
  M. Osakabe, S. Yamamoto, K. Toi, Y. Takeiri, S. Sakakibara, K. Nagaoka, et. al.
- Journal Title
  
  Nuclear Fusion 46
  
  Pages: 917-916
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340189
[Journal Article] Experimental observations of enhanced radial transport of Energetic Particles with Alfven Eigen mode on LHD2006
- Author(s)
  M. Osakabe, S. Yamamoto, K. Toi, Y.Takeiri, S. Sakakibara, K. Nagaoka, et.al.
- Journal Title
  
  Nuclear Fusion 46
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18340189
[Journal Article] Hybrid Probe Measurement of Peripheral Plasma on CHS2004
- Author(s)
  Kenichi Nagaoka, et al.
- Journal Title
  
  Proceedings of 31^<st> European Physics Society Conference on Plasma Physics
  
  Pages: 5-110
- Data Source
  KAKENHI-PROJECT-15740333
[Patent] イオンビーム照射装置2023
- Inventor(s)
  津守克嘉、永岡賢一、中野治久、高橋和貴
- Industrial Property Rights Holder
  津守克嘉、永岡賢一、中野治久、高橋和貴
- Industrial Property Rights Type
  特許
- Industrial Property Number
  2023-098912
- Filing Date
  2023
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] ヘリオトロン型磁場配位における非共鳴波動加熱を用いた統計加速2024
- Author(s)
  "小林進二, 藤田智大, 山戸瞭雅, 永岡賢一, 長﨑百伸, 稲垣滋, 川手朋子, 大垣英明, 紀井俊輝, 全炳俊, 藤田駿, 門信一郎, 南貴司, 大島慎介, 木島滋, 水内亨
- Organizer
  日本物理学会2024年春季大会
- Data Source
  KAKENHI-PROJECT-22H00117
[Presentation] ヘリオトロン型磁場配位における非共鳴波動加熱を利用した統計加速モデルの考察2023
- Author(s)
  小林進二, 永岡賢一, 長﨑百伸, 稲垣滋, 藤田智大, 山戸瞭雅, 藤田駿, 大島慎介, 大垣英明, 紀井俊輝, 全炳俊, 門信一郎, 南貴司, 木島滋, 水内亨
- Organizer
  日本物理学会第78回年次大会
- Data Source
  KAKENHI-PROJECT-22H00117
[Presentation] LaBrシンチレータを用いたヘリオトロンJプラズマの高エネルギーX線スペクトル計測2023
- Author(s)
  山戸瞭雅, 小林進二, 大垣英明, 紀井俊輝, 全炳俊, 永岡賢一, 川手朋子, 稲垣滋, 岡田浩之, 南貴司, 門信一郎, 大島慎介, 水内亨, 木島滋, 長﨑百伸 "
- Organizer
  第40回プラズマ・核融合学会年会
- Data Source
  KAKENHI-PROJECT-22H00117
[Presentation] 負イオンシース境界の硬さ2023
- Author(s)
  永岡賢一、濱嶋大河、津守克嘉、中野治久、長壁正樹、波場泰昭、高橋和貴、宮本賢治、W. Kraus, U. Fantz, E. Rattanawongnara
- Organizer
  日本物理学会第78回年次大会（2023年）
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] 負イオンシース境界の硬さ2023
- Author(s)
  永岡賢一、濱嶋大河、津守克嘉、中野治久、長壁正樹、波場泰昭、高橋和貴、宮本賢治、W. Kraus, U. Fantz, E. Rattanawongnar
- Organizer
  日本物理学会第78回年次大会
- Data Source
  KAKENHI-PROJECT-23H05442
[Presentation] ヘリオトロンJにおける非共鳴マイクロ波加熱プラズマ中の X線エネルギー分布のシミュレーション2023
- Author(s)
  藤田智大, 小林進二, 長﨑百伸, 永岡賢一, 川手朋子, 門信一郎, 南貴司, 大島慎介, 金史良, 王晨宇, 田附勇人, 山戸瞭雅, 藤田駿, 木島滋, 水内亨
- Organizer
  第40回プラズマ・核融合学会年会
- Data Source
  KAKENHI-PROJECT-22H00117
[Presentation] Construction of a Filament-RF driven hybrid negative ion source at NIFS2022
- Author(s)
  Katsuyoshi Tsumori, Katsunori Ikeda, Haruhisa Nakano, Yasuhiko Takeiri, Kenji Saito, Engryht Rattanawongnara, Kenichi Nagaoka, Pierluigi Veltri, Werner Kraus, Stefan Briefi, Bernd Heinemann, Ursel Fantz, Masaki Osakabe
- Organizer
  The 8th International symposium on Negative Ions, Beams and Sources (NIBS’22)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] Negative and positive ion density in front of negative ion production surface in large-scaled negative ion source for fusion2022
- Author(s)
  Shingo Masaki, Katsuyoshi Tsumori, Masaki Osakabe, Katsunori Ikeda, Yasuhiko Takeiri, Engrhyt Rattanawongnara, Kenichi Nagaoka
- Organizer
  The 8th International symposium on Negative Ions, Beams and Sources (NIBS’22)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] ヘリオトロンJにおける非共鳴マイクロ波加熱プラズマ中の高エネルギーX線スペクトル解析2022
- Author(s)
  伊藤龍志、小林進二、永岡賢一、長﨑百伸、大垣英明、紀井俊輝、全炳俊、稲垣滋、岡田浩之、南貴司、門信一郎、大島慎介、水内享、木島滋
- Organizer
  第39回プラズマ・核融合学会年会
- Data Source
  KAKENHI-PROJECT-22H00117
[Presentation] Langmuir-probe measurement in the vicinity of plasma grid aperture of hydrogen negative ion source2022
- Author(s)
  Katsunori Ikeda, Kenichi Nagaoka, Masaki Osakabe, Nakano Haruhisa, Tsumori Katsuyoshi, Yasuhiko Takeiri
- Organizer
  The 8th International symposium on Negative Ions, Beams and Sources (NIBS’22)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] 磁場閉じ込め実験装置ヘリオトロンJで観測された統計加速の特徴2022
- Author(s)
  小林進二、永岡賢一、長崎百伸、稲垣滋、伊藤龍志、大垣英明、紀井俊輝、全炳俊、藤田智大、山戸瞭雅、岡田浩之、大島慎介、門信一郎、南貴司、木島滋、水内亨
- Organizer
  第39回プラズマ・核融合学会年会
- Data Source
  KAKENHI-PROJECT-22H00117
[Presentation] Dynamic responses of negative ion meniscus to externally applied RF field2022
- Author(s)
  K. Nagaoka, Haruhisa Nakano, Katsunori Ikeda, Katsuyoshi Tsumori, Masaki Osakabe, Masashi Kisaki, Ryoya Nakamoto, Taiga Hamajima, Yasuhiko Takeiri
- Organizer
  The 8th International symposium on Negative Ions, Beams and Sources (NIBS’22)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] Study of the charged particle flow near the plasma grid in negative ion source2021
- Author(s)
  S Masaki, H Nakano, E Rattanawongnara, K Nagaoka, K Ikeda, Y Fujiwara, M Osakabe, M Wada, K Tsumori
- Organizer
  19th International Conference on Ion Sources (ICIS2021)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] 負イオン源プラズマ中におけるRF電場のビーム集束性に対する影響2021
- Author(s)
  濱嶋大河,中本崚也,津守克嘉,長壁正樹,中野治久,池田勝則,吉村信次,木崎雅志,宮本賢治,高橋和貴,正木伸吾,Engrhyt Rattanawongnara,永岡賢一
- Organizer
  日本物理学会秋季大会
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] Identification of two-type responses to the RF electric field of negative ion beam2021
- Author(s)
  Taiga Hamajima, Ryoya Nakamoto, Katsuyosi Tsumori, Masaki Osakabe, Haruhisa Nakano,Katsunori Ikeda, Shinji Yoshimura, Masasi Kisaki, Kenji Miyamoto, Kazunori Takahashi, Shingo Masaki, Rattanawongnara Engrhyt, Kenichi Nagaoka
- Organizer
  The 30th International Toki Conference (ITC30)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] Comparison of ion source plasma responses to extraction grid bias between hydrogen and deuterium operations in NIFS-RNIS2021
- Author(s)
  H Nakano, S Masaki, E Rattanawongnara, K Tsumori, K Ikeda, T Hamajima, K Nagaoka, M Osakabe
- Organizer
  19th International Conference on Ion Sources (ICIS2021)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] Study of negative ion beam emittance characteristic using 3D PIC-MCC simulation2021
- Author(s)
  K Miyamoto, K Nagaoka, A Hatayama, K Hoshino, H Nakano, T Shibata, K Tsumori
- Organizer
  19th International Conference on Ion Sources (ICIS2021)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] Effect of RF electric field on beam focusing in negative ion source plasma2021
- Author(s)
  Taiga Hamajima, Ryoya Nakamoto, Katsuyosi Tsumori, Masaki Osakabe, Haruhisa Nakano,Katsunori Ikeda, Shinji Yoshimura, Masasi Kisaki, Kenji Miyamoto, Kazunori Takahashi, Shingo Masaki, Rattanawongnara Engrhyt, Kenichi Nagaoka
- Organizer
  19th International Conference on Ion Sources (ICIS2021)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] Difference of co-extracted electron current and beam acceleration in a negative ion source with hydrogen-isotope ions2021
- Author(s)
  K Ikeda, K Tsumori, H Nakano, K Nagaoka, Y Takeiri, S Masaki, E Rattanawongnara, M Osakabe
- Organizer
  19th International Conference on Ion Sources (ICIS2021)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] Beam instability in the vicinity of beam extraction region of negative ion source2021
- Author(s)
  K Nagaoka, R Nakamoto, T Sasaki, T Hamajima, H Nakano, K Ikeda, Y Fujiwara, M Osakabe, Y Takeiri, K Tsumori
- Organizer
  19th International Conference on Ion Sources (ICIS2021)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] 負イオンビーム集束性に関する考察2020
- Author(s)
  永岡賢一波場泰昭木崎雅志中本崚也津守克嘉中野治久宮本賢治高橋和貴池田勝則藤原大長壁正樹
- Organizer
  日本物理学会2020年年次大会
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] 負イオンビーム集束性に関する考察2020
- Author(s)
  永岡賢一波場泰昭木崎雅志中本崚也津守克嘉中野治久宮本賢治高橋和貴池田勝則藤原大長壁正樹
- Organizer
  日本物理学会2020年年次大会
- Data Source
  KAKENHI-PROJECT-17H03002
[Presentation] Different characteristics of plasma meniscus formation between positive and negative beam extraction2020
- Author(s)
  K. Nagaoka, Y. Haba, M. Kisaki, K. Takahashi, A. Ando, J. Slief, R. Nakamoto, H. Nakano, K. Tsumori, K. Ikeda, K. Miyamoto, Y. Fujiwara, S. Masaki, E. Rattanawongnara, M. Osakabe
- Organizer
  The 7th International symposium on Negative Ions, Beams and Sources (NIBS’20)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] Profile of the LHD negative ion beam source at the plasma meniscus from numerical beam calculation based on experimental observation2020
- Author(s)
  Jelle Slief, Kenichi Nagaoka, Masashi Kisaki, Yasuaki Haba
- Organizer
  The 7th International symposium on Negative Ions, Beams and Sources (NIBS’20)
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] Experimental observation of negative ion beam oscillation with a filament-arc-type negative ion source2019
- Author(s)
  Y. Haba K. Nagaoka K. Tsumori M. Kisaki H. Nakano K. Ikeda S. Yoshimura and M. Osakabe
- Organizer
  XXXIV ICPIG & ICRP-10
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] Optical Characteristics of Negative Ion Beam with Multi-Beam-Axes Produced by LHD-type Negative Ion Source2019
- Author(s)
  Kenichi Nagaoka Yasuaki Haba Katsuyoshi Tsumori Masashi Kisaki Haruhisa Nakano Katsunori Ikeda Shingo Masaki Kenji Miyamoto Kazunori Takahashi and Masaki Osakabe
- Organizer
  The 18th International Conference on Ion Sources
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] プラズマ加熱用負イオンビーム位相空間構造に基づくビーム光学評価2019
- Author(s)
  波場泰昭永岡賢一津守克嘉木﨑雅志中野治久池田勝則長壁正樹
- Organizer
  日本物理学会2019年秋季大会
- Data Source
  KAKENHI-PROJECT-17H03002
[Presentation] Optical Characteristics of Negative Ion Beam with Multi-Beam-Axes Produced by LHD-type Negative Ion Source2019
- Author(s)
  Kenichi Nagaoka Yasuaki Haba Katsuyoshi Tsumori Masashi Kisaki Haruhisa Nakano Katsunori Ikeda Shingo Masaki Kenji Miyamoto Kazunori Takahashi and Masaki Osakabe
- Organizer
  The 18th International Conference on Ion Sources
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17H03002
[Presentation] プラズマ加熱用負イオンビーム位相空間構造に基づくビーム光学評価2019
- Author(s)
  波場泰昭永岡賢一津守克嘉木﨑雅志中野治久池田勝則長壁正樹
- Organizer
  日本物理学会2019年秋季大会
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] Experimental observation of negative ion beam oscillation with a filament-arc-type negative ion source2019
- Author(s)
  Y. Haba K. Nagaoka K. Tsumori M. Kisaki H. Nakano K. Ikeda S. Yoshimura and M. Osakabe
- Organizer
  XXXIV ICPIG & ICRP-10
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17H03002
[Presentation] 負イオンビームレット安定性の実験的評価2019
- Author(s)
  波場泰昭, 永岡賢一, 津守克嘉, 木﨑雅志, 中野治久, 池田勝則, 吉村信次, 長壁正樹
- Organizer
  日本物理学会年次大会
- Data Source
  KAKENHI-PROJECT-18KK0080
[Presentation] Development of a new beamlet monitor system:Time resolution and phase space structure2018
- Author(s)
  Y. Haba, K. Nagaoka, K. Tsumori, M. Kisaki, H. Nakano, K. Ikeda, Y. Fujiwara, S. Kamio, S. Yoshimura, and M. Osakabe
- Organizer
  International symposium on Negativev ion beams and sources
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17H03002
[Presentation] 負イオンビームプロファイルの高時間分解能計2018
- Author(s)
  波場泰昭, 永岡賢一, 津守克嘉, 木﨑雅志, 中野治久, 池田勝則, 吉村信次, 長壁正樹
- Organizer
  プラズマ核融合学会
- Data Source
  KAKENHI-PROJECT-17H03002
[Presentation] 負イオンビームレット安定性の実験的評価2018
- Author(s)
  波場泰昭, 永岡賢一, 津守克嘉, 木﨑雅志, 中野治久, 池田勝則, 吉村信次, 長壁正樹
- Organizer
  日本物理学会年会
- Data Source
  KAKENHI-PROJECT-17H03002
[Presentation] プラズマ加熱用負イオンビームの位相空間構造の実験的評価2018
- Author(s)
  波場泰昭、永岡賢一、他
- Organizer
  第73回日本物理学会年会
- Data Source
  KAKENHI-PROJECT-17H03002
[Presentation] Experimental observation of phase space structure of negative hydrogen ion beam for plasma heating2017
- Author(s)
  Y. Haba, K. Nagaoka, el tl.,
- Organizer
  International Toki Conference 2017
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17H03002
[Presentation] 液晶電気対流を用いた回転乱流の拡散特性2017
- Author(s)
  堀田彩、永岡賢一、吉村信次、日高芳樹、寺坂健一郎、小澤直也
- Organizer
  物理学会2016年度春季
- Place of Presentation
  大阪大学
- Year and Date
  2017-03-17
- Data Source
  KAKENHI-PROJECT-26610194
[Presentation] Experimental observation of phase space structure of negative hydrogen ion beam for plasma heating2017
- Author(s)
  Y. Haba, K. Nagaoka, el tl.,
- Organizer
  Plasma Conference 2017
- Data Source
  KAKENHI-PROJECT-17H03002
[Presentation] ヘリオトロンJにおけるECH/ECCDを用いた高エネルギー粒子励起MHD不安定性の制御2017
- Author(s)
  長﨑百伸, 山本聡, 國分大, 小林進二, 岡田浩之, 門信一郎, 南貴司, 大島慎介, 木島滋, 釼持尚輝,明, 多和田斉興, 白波瀬一貴, 野﨑勇樹, 望月聡一郎, 飯村幹, 山田晃生, 中村祐司, 石澤明宏, G. M. Weir, 永岡賢一, 水内亨
- Organizer
  日本物理学会年次大会
- Place of Presentation
  大阪
- Year and Date
  2017-03-17
- Data Source
  KAKENHI-PROJECT-26709071
[Presentation] Experimental Evaluation of Energy Transfer between Fast Ions and Alfven Eigenmodes2016
- Author(s)
  K. Nagaoka, M. Osakabe, M. Isobe, K. Ogawa, Y. Suzuki, M. Shibuya, S. Kobayashi, S. Yamamoto, Y. Miyoshi, Y. Katoh, J.M. Fontdecaba
- Organizer
  Annual meeting of American Physical Society, Division of Plasma Physics
- Place of Presentation
  San Jose, CA, USA
- Year and Date
  2016-10-31
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26709071
[Presentation] 高周波負イオンビーム源開発へ向けたフィラメント放電中RFシース生成・制御実験2016
- Author(s)
  増澤慶汰，佐々木佑晃，高橋和貴，中野治久，永岡賢一, 小室淳史，安藤晃，津守克嘉
- Organizer
  第33回プラズマ核融合学会年会
- Place of Presentation
  東北大学 (宮城県，仙台市)
- Year and Date
  2016-11-29
- Data Source
  KAKENHI-PROJECT-26247096
[Presentation] Experimental Study of Turbulent Transport and the Effect of Rotation in an Eelectro-Convection2016
- Author(s)
  K. Nagaoka, S. Yoshimura, S. Hotta, N. Ozawa, Y. Hidaka, K. Maeda, K. Terasaka, S. Ohshima, T. Kobayashi, M. Kubo, R. Ishikawa and N. Yokoi
- Organizer
  East-Asia School and Workshop on Laboratory, Space, and Astrophysical Plasmas
- Place of Presentation
  Tsukuba
- Year and Date
  2016-07-11
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26610194
[Presentation] 乱流拡散への回転の影響の実験観測2016
- Author(s)
  永岡賢一, 堀田彩, 吉村信次, 日高芳樹, 前田和也, 小澤直也, 寺坂健一郎, 大島慎介, 小林達哉
- Organizer
  日本物理学会(秋）
- Place of Presentation
  東京
- Year and Date
  2016-09-13
- Data Source
  KAKENHI-PROJECT-26610194
[Presentation] 系の回転が乱流スペクトルと乱流輸送に与える影響2016
- Author(s)
  永岡賢一、吉村信次、小林達哉、日高芳樹、前田和也、寺坂健一郎、大島慎介
- Organizer
  日本天文学会
- Place of Presentation
  首都大学東京
- Year and Date
  2016-03-14
- Data Source
  KAKENHI-PROJECT-26610194
[Presentation] アルベン固有モードと相互作用する高速イオンの位相空間構造の実験観測2016
- Author(s)
  永岡賢一、長壁正樹、磯部光孝、小川国大、神尾修治、小林進二、山本聡、大島慎介、水内了、J.M,Fotdecaba, E. Ascasibar
- Organizer
  プラズマ核融合学会
- Place of Presentation
  仙台
- Year and Date
  2016-11-29
- Data Source
  KAKENHI-PROJECT-26709071
[Presentation] Charged Particle Flows in the Beam Extraction Region of a Negative Hydrogen Ion Source for NBI2015
- Author(s)
  S. Geng, K. Tsumori, H. Nakano, M. Kisaki, K. Nagaoka, K. Ikeda, Y. Takeiri, M. Shibuya and O. Kaneko
- Organizer
  the 16th International Conference on Ion Sources
- Place of Presentation
  New York, USA
- Year and Date
  2015-09-23
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Experimental Measurement of Phase Space Structure of Fast Ions Interacting with Alfven Eigenmodes2015
- Author(s)
  K. Nagaoka
- Organizer
  5th East-Asia School and Workshop on Laboratory, Space, and Astrophysical plasmas
- Place of Presentation
  POSTECH, Pohang, Korea
- Year and Date
  2015-08-17
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26709071
[Presentation] Depth of Influence on the Plasma by Beam Extraction in a Negative Hydrogen Ion Source for NBI2015
- Author(s)
  S. Geng, K. Tsumori, H. Nakano, M. Kisaki, K. Ikeda, M. Osakabe, K. Nagaoka, Y. Takeiri, M. Shibuya, and O. Kaneko
- Organizer
  25th International Toki Conference
- Place of Presentation
  Toki Gifu, Japan
- Year and Date
  2015-11-03
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Development of millimeter-wave interferometer for electron density measurements with beam extraction in the negative ion source2015
- Author(s)
  T. Tokuzawa, M. Kisaki, K. Nagaoka, K. Tsumori, K. Ikeda, H. Nakano, S. Geng, M. Osakabe, Y. Takeiri, and O. Kaneko
- Organizer
  25th International Toki Conference
- Place of Presentation
  Toki Gifu, Japan
- Year and Date
  2015-11-03
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] 液晶電気対流による乱流の構造と輸送現象についての研究2015
- Author(s)
  日高芳樹, 前田和也, 永岡賢一, 吉村信次, 寺坂健一郎, 岡部弘高, 原一広
- Organizer
  2015年日本液晶学会討論会
- Place of Presentation
  東工大
- Year and Date
  2015-09-05
- Data Source
  KAKENHI-PROJECT-26610194
[Presentation] Wave-particle interaction analyser for study of Alfven eigenmodes in the Large Helical Device2015
- Author(s)
  K. Nagaoka, M. Osakabe, M. Isobe, K. Ogawa, Y. Suzuki, M. Shibuya, S. Kobayashi, S. Yamamoto, Y. Miyoshi, Y. Katoh, J. M. Fontdecaba
- Organizer
  International Stellarator/Heliotron Workshop
- Place of Presentation
  Greifswald, Germany
- Year and Date
  2015-10-05
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26709071
[Presentation] Recent Studies of Hydrogen Negative Ion Source and Beam Production for NBI in Large Helical Device2015
- Author(s)
  K. Ikeda, P. Agostinetti, M. Brombin, U. Fantz, S. Geng, O. Kaneko, M. Kisaki, K. Nagaoka, H. Nakano, M. Osakabe, E. Sartori,G. Serianni, Y. Takeiri, K. Tsumori, P. Veltri, C. Wimmer, and D. Wunderlich
- Organizer
  The 25th International Toki Conference
- Place of Presentation
  Toki Gifu, Japan
- Year and Date
  2015-11-03
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] イメージング計測を用いた大型RF水素負イオン源引出領域の研究2015
- Author(s)
  池田勝則, WUNDERLICH Dirk, 木崎雅志, 津守克嘉, 中野治久, 永岡賢一, GENG Shaofei, 長壁正樹, FANTZ Ursel, 金子修, 竹入康彦
- Organizer
  第32回プラズマ・核融合学会年会
- Place of Presentation
  名古屋
- Year and Date
  2015-11-24
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] ＮＩＦＳ-Ｒ＆Ｄイオン源での統合的負イオンプラズマ計測2015
- Author(s)
  K. Tsumori, S. Geng, K. Ikeda, H. Nakano, M. Kisaki, M. Wada, K. Sasaki, S. Nishiyama, G. Serianni, C. Wimmer, P. Agosttineti, E. Sartori, M. Brombin, K. Nagaoka, M. Osakabe, Y. Takeiri, O. Kaneko and NIFS NBI group
- Organizer
  第32回プラズマ・核融合学会年会
- Place of Presentation
  名古屋
- Year and Date
  2015-11-24
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Behavior of Negative Hydrogen Ion and Its Beam by Bias and Beam Extraction Voltages2015
- Author(s)
  H. Nakano, K.Tsumori, M. Kisaki, K. Ikeda, K. Nagaoka, M. Osakabe, Y. Takeiri and O. Kaneko
- Organizer
  The 68th Gaseous Electronics Conference, the 9th International Conference on Reactive Plasmas and the 33rd Symposium on Plasma Processing
- Place of Presentation
  Honolulu, U.S.A.
- Year and Date
  2015-10-12
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Negative Ion Production and Beam Extraction Processes in a Large Ion Source2015
- Author(s)
  K. Tsumori, K. Ikeda, H. Nakano, M. Kisaki, S. Geng, M. Wada, K. Sasaki, S. Nishiyama, M. Goto, G. Serianni, P. Agostinetti, E. Sartori, M. Brombin, P. Veltri, C. Wimmer, K. Nagaoka, M. Osakabe, Y. Takeiri, and O. Kaneko
- Organizer
  the 16th International Conference on Ion Sources
- Place of Presentation
  New York, USA
- Year and Date
  2015-09-23
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Measurement of Phase Space Structure of Fast Ions Interacting with Alfven Eigenmode2015
- Author(s)
  K.Nagaoka, M. Osakabe, M. Isobe, K. Ogawa, Y. Suzuki, S. Kobayashi,S. Yamamoto, Y. Miyoshi, Y. Katoh,J.M.Fontdecaba, M. Shibuya
- Organizer
  57th Meeting of APS Division of Plasma Physics Meeting
- Place of Presentation
  Savannah, Georgia, USA
- Year and Date
  2015-11-16
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26709071
[Presentation] Measurement of Phase Space Structure of Fast Ions Interacting with Alfven Eigenmodes2015
- Author(s)
  K. Nagaoka, M. Osakabe, M. Isobe, K. Ogawa, Y. Suzuki, S. Kobayashi, S. Yamamoto, Y. Miyoshi, Y. Katoh, J. M. Fontdecaba
- Organizer
  IAEA Technical Meeting on Energetic Particles in Magnetic Confinement Systems
- Place of Presentation
  VIENNA, Austria
- Year and Date
  2015-09-01
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26709071
[Presentation] Installation of Spectrally Selective Imaging System in RF Negative Ion Source2015
- Author(s)
  K. Ikeda, D. Wunderlich, U. Fantz, B. Heinemann, M. Kisaki, K. Nagaoka, H. Nakano, M. Osakabe, K. Tsumori, O. Kaneko and Y. Takeiri
- Organizer
  the 16th International Conference on Ion Sources
- Place of Presentation
  New York, USA
- Year and Date
  2015-09-23
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Response of charged particle flows to the extraction field in a negative hydrogen ion source for NBI2015
- Author(s)
  S. Geng, K. Tsumori, H. Nakano, M. Kisaki, K. Ikeda, M. Osakabe, K. Nagaoka, Y. Takeiri, M. Shibuya, and O. Kaneko
- Organizer
  第32回プラズマ・核融合学会年会
- Place of Presentation
  名古屋
- Year and Date
  2015-11-24
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Development and Physics of Negative Ion Sources for LHD NBI2013
- Author(s)
  K. Tsumori, H. Nakano, K. Ikeda, M. Kisaki, M. Osakabe, K. Nagaoka, Y. Takeiri, NIFS NBI group, T, Fukuyama, S. Nishioka, T, Shibata, and A. Hatayama
- Organizer
  55th Annual Meeting of the APS Division of Plasma Physics
- Place of Presentation
  Sheraton Denver Downtown Hotel, Denver, Colorado, USA
- Invited
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Characteristics of Electrohydrodynamic Convection Driven Turbulence and Laboratory Simulation Project of the Solar Convection Zone2013
- Author(s)
  K. Nagaoka
- Organizer
  12th Asia Pasific Physics Conference (APPC12)
- Place of Presentation
  Makuhari, Japan
- Data Source
  KAKENHI-PROJECT-23654072
[Presentation] High-Performance of Negative-Ion-Based Neutral Beam Injectors for Extension of Plasma Parameter Regime in Large Helical Device2013
- Author(s)
  Y. Takeiri, K. Tsumori, M. Osakabe, K. Ikeda, K. Nagaoka, H. Nakano, M. Kisaki, E. Asano, T. Kondo, M. Sato, M. Shibuya, S. Komada, H. Sekiguchi, O. Kaneko, V. Antoni, G. Serianni, and P. Agostinetti
- Organizer
  Joint 19th International Stellarator/Heliotron Workshop and 16th IEA-RFP Workshop
- Place of Presentation
  Centro Culturale San Gaetano, Padova, Italy
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] H- Density Behavior for Positive and Negative Extraction and Bias Voltages2013
- Author(s)
  Haruhisa Nakano, Katsuyoshi Tsumori, Masashi Kisaki, Masayuki Shibuya, Katsunori Ikeda, Kenichi Nagaoka, Masaki Osakabe, Osamu Kaneko, Eiji Asano, Tomoaki Kondo, Mamoru Sato, Haruro Sekiguchi, Seiji Komada, and Yasuhiko Takeiri
- Organizer
  The 15th International Conference on Ion Sources
- Place of Presentation
  Makuhari Messe, Chiba, Japan
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] 波長変調レーザー吸収分光法による水素負イオン源内の水素原子温度計測2013
- Author(s)
  中野治久, 西山修輔, 後藤基志, 津守克嘉, 木崎雅志, 池田勝則, 渋谷真之, 永岡賢一, 長壁正樹, 浅野英児, 近藤友紀, 佐藤守, 関口温朗, 竹入康彦, 金子修, 佐々木浩一
- Organizer
  プラズマ・核融合学会第３０回年会
- Place of Presentation
  東京工業大学（東京都目黒区）
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] 負イオン源の電極バイアス特性2013
- Author(s)
  木崎雅志、津守克嘉、池田勝則、中野治久、長壁正樹、永岡賢一、竹入康彦、金子修
- Organizer
  プラズマ・核融合学会第３０回年会
- Place of Presentation
  東京工業大学（東京都目黒区）
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Turbulence experiment with high controllability in a rotating system for dynamo physics2012
- Author(s)
  Kenichi Nagaoka, Shinji Yoshimura Hideaki Miura, Youhei Masada, Shoichi Kai, Yoshiki Hidaka, Kenichiro Terasaka
- Organizer
  APS-DPP
- Place of Presentation
  RI, USA
- Data Source
  KAKENHI-PROJECT-23654072
[Presentation] Electrohydrodynamic convection driven turbulence in a rotating system and laboratory simulation of the solar convective zone2012
- Author(s)
  K. Nagaoka
- Organizer
  22rd International Toki
- Place of Presentation
  Toki city, Japan
- Data Source
  KAKENHI-PROJECT-23654072
[Presentation] Turbulence experiment with high controllability in a rotating system for dynamo physics2012
- Author(s)
  K. Nagaoka
- Organizer
  Division of Plasma Physics, American Physical Society
- Place of Presentation
  Providence, RI, USA
- Data Source
  KAKENHI-PROJECT-23654072
[Presentation] Electrohydrodynamic convection driven turbulence in a rotating system and laboratory simulation of the solar convective zone2012
- Author(s)
  K. Nagaoka, S. Yoshimura, Y. Masada, S. Kai, Y. Hidaka, N. Yokoi, S. Tsuneta, M. Kubo, K. Terasaka, H. Miura
- Organizer
  22nd Int. Toki Conf.
- Place of Presentation
  土岐
- Data Source
  KAKENHI-PROJECT-23654072
[Presentation] 回転球殻乱流場における大規模流れ場生成実験2012
- Author(s)
  永岡賢一、吉村信次、吉沼幹朗、常田佐久、久保雅仁、石川遼子、横井喜充、政田洋平、日高芳樹、甲斐昌一
- Organizer
  日本天文学会
- Place of Presentation
  龍谷大学
- Data Source
  KAKENHI-PROJECT-23654072
[Presentation] 回転する乱流中の速度場形成2012
- Author(s)
  永岡賢一、吉村信次、三浦英昭、常田佐久、久保雅仁、横井喜充、政田洋平、甲斐昌一、日高芳樹、寺坂健一郎
- Organizer
  プラズマ・核融合学会第29回年会
- Place of Presentation
  春日
- Data Source
  KAKENHI-PROJECT-23654072
[Presentation] 回転球殻乱流場における大規模流れ場生成実験2012
- Author(s)
  永岡賢一、吉村信次、吉沼幹朗、常田佐久、久保雅仁、石川遼子、横井喜充、政田洋平、日高芳樹、甲斐昌一
- Organizer
  日本天文学会
- Place of Presentation
  龍谷大学(京都)
- Data Source
  KAKENHI-PROJECT-23654072
[Presentation] 回転乱流中の流れ場生成 -太陽対流層模擬実験 -2012
- Author(s)
  永岡賢一、吉村信次、三浦英昭、常田佐久、久保雅仁、横井喜充、政田洋平、甲斐昌一、日高芳樹、寺坂健一郎
- Organizer
  日本物理学会2012 年秋季大会
- Place of Presentation
  横浜国大(横浜)
- Data Source
  KAKENHI-PROJECT-23654072
[Presentation] 回転乱流中の流れ場生成　－太陽対流層模擬実験－2012
- Author(s)
  永岡賢一
- Organizer
  日本物理学会秋季大会
- Place of Presentation
  横浜国立大学
- Data Source
  KAKENHI-PROJECT-23654072
[Presentation] 回転する乱流中の速度場形成2012
- Author(s)
  永岡賢一
- Organizer
  プラズマ・核融合学会年会
- Place of Presentation
  福岡県春日市
- Data Source
  KAKENHI-PROJECT-23654072
[Presentation] Clump and Hole formation in the energetic particle spectra by the TAE and their behaviours during the mode activities on LHD2009
- Author(s)
  M.Osakabe, Y.Takeiri, K.Nagaoka, 他
- Organizer
  第11回高エネルギー粒子に関するLAEA専門家会議
- Place of Presentation
  キエフ(ウクライナ)
- Year and Date
  2009-09-21
- Data Source
  KAKENHI-PROJECT-18340189
[Presentation] Fast ion measurement using a hybrid directional probe in the large helical device2008
- Author(s)
  K. Nagaoka, 他
- Organizer
  第17回高温プラズマ計測会議
- Place of Presentation
  アルバカーキ(米国)
- Data Source
  KAKENHI-PROJECT-18340189
[Presentation] Fastion measurement using a hybrid directional probe in the large helical device2008
- Author(s)
  K. Nagaoka, 他。
- Organizer
  高温プラズマ計測会議
- Place of Presentation
  アルバカーキ(米国)
- Year and Date
  2008-05-13
- Data Source
  KAKENHI-PROJECT-18340189
[Presentation] Local Observation of Energetic Particle Mode Bursts and Fast Ion Responses in the Compact Helical System2007
- Author(s)
  K.Nagaoka, 他
- Organizer
  第10回高エネルギー粒子に関するIAEA 専門家会議
- Place of Presentation
  クロスターゼーオン(ドイツ)
- Data Source
  KAKENHI-PROJECT-18340189
[Presentation] Local Observation of Energetic Particle Mode Bursts and Fast Ion Responses in the Compact Helical System2007
- Author(s)
  K. Nagaoka, 他
- Organizer
  第10回高エネルギー粒子に関するIAEA専門家会議
- Place of Presentation
  クロスターゼーオン(ドイツ)
- Data Source
  KAKENHI-PROJECT-18340189
[Presentation] 方向性プローブ法を用いた高速インの定量的評価法2007
- Author(s)
  永岡賢一
- Organizer
  日本物理学会2007年秋季大会
- Place of Presentation
  北海道大学
- Year and Date
  2007-09-24
- Data Source
  KAKENHI-PROJECT-18360445
[Presentation] Optical Observation of Reduction Structure of H- Ions at Extraction Region in Hydrogen Negative Ion Source
- Author(s)
  K. Ikeda, H. Nakano, K. Tsumori, M. Kisaki, K. Nagaoka, M. Osakabe, Y. Takeiri, and O. Kaneko
- Organizer
  The 15th International Conference on Ion Sources
- Place of Presentation
  Makuhari Messe, Chiba, Japan
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Direct measurement of wave-particle interactions between energetic ions and Alfven wave in laboratory plasmas
- Author(s)
  K. Nagaoka, M. Osakabe, M. Isobe, K. Ogawa, K. Saito, Y. Miyoshi and Y. Kato
- Organizer
  5th East-Asia School and Workshop on Laboratory, Space, and Astrophysical plasmas
- Place of Presentation
  POSTECH, Korea
- Year and Date
  2015-08-17 – 2015-08-22
- Invited
- Data Source
  KAKENHI-PROJECT-26709071
[Presentation] Hydrogen Atom Temperature measured with Wavelength-Modulated Laser Absorption Spectroscopy in Lage Scale Filament Arc Negative Hydrogen Ion Source
- Author(s)
  H. Nakano, S. Nishiyama, M. Goto, K. Tsumori, M. Kisaki, K. Ikeda, K. Nagaoka,  M. Osakabe, Y. Takeiri, O. Kaneko and K. Sasaki
- Organizer
  The 4th International Symposium on Negative Ions, Beams and Sources
- Place of Presentation
  IPP Garching, Germany
- Year and Date
  2014-10-06 – 2014-10-10
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Characteristics of Cso and Cs+ in Extraction Region of a Negative Ion Source for NBI
- Author(s)
  K. Tsumori, H. Nakano, M. Kisaki, G. Shaofei, K. Ikeda, K.Nagaoka, M. Osakabe, Y. Takeiri, O. Kaneko, M. Shibuya, and NIFS NBI Group
- Organizer
  Plasma Conference 2014
- Place of Presentation
  朱鷺メッセ、新潟市
- Year and Date
  2014-11-18 – 2014-11-21
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Evaluation of negative ion distribution changes by image processing diagnostic
- Author(s)
  K. Ikeda, H. Nakano, K. Tsumori, M. Kisaki, S. Geng, K. Nagaoka, T. Tokuzawa, M. Osakabe, Y. Takeiri, and O.
- Organizer
  The 4th International Symposium on Negative Ions, Beams and Sources
- Place of Presentation
  IPP Garching, Germany
- Year and Date
  2014-10-06 – 2014-10-10
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Laser photodetachment diagnostics of a 1/3-size negative hydrogen ion source for NBI
- Author(s)
  S. Geng, K. Tsumori, H. Nakano, M. Kisaki, K. Ikeda, Y. Takeiri, M. Osakabe, K. Nagaoka, and O. Kaneko
- Organizer
  The 4th International Symposium on Negative Ions, Beams and Sources
- Place of Presentation
  IPP Garching, Germany
- Year and Date
  2014-10-06 – 2014-10-10
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Spatial distribution of electron density in large-scaled negative ion source
- Author(s)
  1. M. Kisaki*, K. Tsumori, K. Ikeda, H. Nakano, S. Geng, K. Nagaoka, T. Tokuzawa, M. Osakabe, Y. Takeiri, O. Kaneko
- Organizer
  The 4th International Symposium on Negative Ions, Beams and Sources
- Place of Presentation
  IPP Garching, Germany
- Year and Date
  2014-10-06 – 2014-10-10
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] A New Experimental Approach to Turbulent Transport in Complex Systems
- Author(s)
  K. Nagaoka, S. Yoshimura, Y. Masada, Y. Hidaka, N. Yokoi, S. Tsuneta, M. Kubo, R. Ishikawa, K. Terasaka, H. Miura
- Organizer
  日本地球惑星科学連合 2014
- Place of Presentation
  パシフィコ横浜、横浜市
- Year and Date
  2014-04-28 – 2014-05-02
- Invited
- Data Source
  KAKENHI-PROJECT-26610194
[Presentation] Observation of Stabilizing Effect of Electron Cyclotron Heating on Fast-Ion-Driven Alfvén Eigenmodes
- Author(s)
  K. Nagaoka, E. Ascasíbar, T. Ido, T. Kobayashi, A. Cappa, S. Yamamoto, K. Nagasaki, M. Osakabe, S. Ohshima, A. Shimizu, T. Estrada and Y. Takeiri
- Organizer
  4th Asia Pacific Transport Working Group
- Place of Presentation
  Kyusyu Univ.
- Year and Date
  2014-06-10 – 2014-06-13
- Invited
- Data Source
  KAKENHI-PROJECT-26709071
[Presentation] Evaluation of H- behavior using a spectrally selective imaging method in hydrogen negative ion source
- Author(s)
  K. Ikeda, H. Nakano, K. Tsumori, M. Kisaki, K. Nagaoka, M. Osakabe, Y. Takeiri, O. Kaneko
- Organizer
  European Physical Society Conferences on Plasma Physics 2014
- Place of Presentation
  Berlin, Germany
- Year and Date
  2014-06-23 – 2014-06-27
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Characteristic of Plasma Grid Bias in Large-Scaled Negative Ion Source
- Author(s)
  M. Kisaki, K. Tsumori, K. Ikeda, H. Nakano, M. Osakabe, K. Nagaoka, Y. Takeiri and O. Kaneko
- Organizer
  The 15th International Conference on Ion Sources
- Place of Presentation
  Makuhari Messe, Chiba, Japan
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] 多孔型負イオン源から引き出されたマルチビームレットの相互作用
- Author(s)
  1. 木崎雅志、津守克嘉、池田勝則、中野治久、S. Geng、P. Veltri、P. Agostinetti、M. Brombin、G. Serianni、長壁正樹、永岡賢一、竹入康彦、金子修
- Organizer
  第10回核融合エネルギー連合講演会
- Place of Presentation
  つくば国際会議場、つくば市
- Year and Date
  2014-06-19 – 2014-06-20
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Pproduction and extraction processes of H- ions in a large scaled negative ion source
- Author(s)
  K. Tsumori, H. Nakano, M. Kisaki, S. Geng, K. Ikeda, K. Nagaoka, M. Osakabe, Y. Takeiri, O. Kaneko
- Organizer
  The 16th International conference on Ion Sources
- Place of Presentation
  New York, USA
- Year and Date
  2015-08-23 – 2015-08-28
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Spatial Distribution of Negative Hydrogen Ions in the Extraction Region of a Negative Hydrogen Ion Source for NBI
- Author(s)
  Shaofei Geng, Katsuyoshi Tsumori, Haruhisa Nakano, Masashi Kisaki, Yasuhiko Takeiri, Masaki Osakabe, Katsunori Ikeda, Ken-ichi Nagaoka, Osamu Kaneko and Masayuki Shibuya
- Organizer
  Plasma Conference 2014
- Place of Presentation
  朱鷺メッセ、新潟市
- Year and Date
  2014-11-18 – 2014-11-21
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Beamlet Tilting due to Electron Deflection Magnet
- Author(s)
  K. Tsumori, G. Serianni, P. Vertri, M. Kisaki, Y. Takeiri, M. Brombin, P. Agostinetti, A. Vanni,K. Ikeda, G. Shaofei, H. Nakano, M. Osakabe, K. Nagaoka, M. Shibuya, T. Kondo, M. Sato, A. Sekiguchi, S. Komada
- Organizer
  第10回エネルギー連合講演会
- Place of Presentation
  つくば国際会議場、つくば市
- Year and Date
  2014-06-19 – 2014-06-20
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Response of Plasma in Extraction Region to Electrostatic Field
- Author(s)
  K. Tsumori, M. Kisaki, K. Ikeda, H. Nakano, M. Osakabe, K. Nagaoka, Y. Takeiri, and O. Kaneko, M. Shibuya, E. Asano, T. Kondo, M. Sato, H. Sekiguchi and S. Komada.
- Organizer
  The 15th International Conference on Ion Sources
- Place of Presentation
  Makuhari Messe, Chiba, Japan
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Beamlet Tilting due to Magnetic Field in Beam Accelerator of NBI Source
- Author(s)
  K. Tsumori, G. Serianni, P. Veltri, M. Kisaki, Y. Takeiri, M. Brombin, P. Agostinetti, K. Ikeda, G. Shaofei, H. Nakano, K. Nagaoka, M. Osakabe, V. Antoni, and NIFS-NBI Group.
- Organizer
  The 4th International Symposium on Negative Ions, Beams and Sources
- Place of Presentation
  IPP Garching, Germany
- Year and Date
  2014-10-06 – 2014-10-10
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Research progress on ionic plasmas generated in an intense hydrogen negative ion source
- Author(s)
  Y. Takeiri, K. Tsumori, K. Ikeda, H. Nakano, M. Kisaki, K. Nagaoka, T. Tokuzawa, S. Geng, M. Osakabe, O. Kaneko, T. Kondo, M. Sato, M. Shibuya, S. Komada and H. Sekiguchi
- Organizer
  The 4th International Symposium on Negative Ions, Beams and Sources
- Place of Presentation
  IPP Garching, Germany
- Year and Date
  2014-10-06 – 2014-10-10
- Invited
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] Spatial distributions of charged particles and plasma potential before and during beam extraction in a negative hydrogen ion source for NBI
- Author(s)
  Shaofei GENG, Katsuyoshi TSUMORI, Haruhisa NAKANO, Masashi KISAKI, Yasuhiko TAKEIRI, Masaki OSAKABE, Katsunori IKEDA, Ken-ichi NAGAOKA, Osamu KANEKO, Masayuki SHIBUYA
- Organizer
  The 24th International Toki Conference
- Place of Presentation
  Toki, Japan
- Year and Date
  2014-11-04 – 2014-11-07
- Data Source
  KAKENHI-PROJECT-25249134
[Presentation] 回転流体中の乱流輸送の基礎実験
- Author(s)
  永岡賢一, 吉村信次, 日高芳樹, 寺坂健一郎, 小林達哉, 横井喜充, 政田洋平, 三浦英昭, 久保雅仁, 石川遼子
- Organizer
  Plasma Conference 2014
- Place of Presentation
  朱鷺メッセ、新潟市
- Year and Date
  2014-11-18 – 2014-11-21
- Data Source
  KAKENHI-PROJECT-26610194
[Presentation] 高エネルギー粒子とアルベン波の相互作用の計測
- Author(s)
  永岡賢一, 長壁正樹、磯部光孝、小川国大、斎藤健二、三好由純、加藤雄人、小林進二、山本聡、大島慎介、LHD実験グループ
- Organizer
  日本物理学会年次大会
- Place of Presentation
  早稲田大学
- Year and Date
  2015-03-21 – 2015-03-24
- Data Source
  KAKENHI-PROJECT-26709071
[Presentation] 水素負イオン源の引出領域における温度と密度分布
- Author(s)
  中野治久、津守克嘉, 池田勝則, 木崎雅志, S. Geng, 渋谷真之, 永岡賢一, 長壁正樹, 竹入康彦, 金子修
- Organizer
  日本物理学会第70回年次大会
- Place of Presentation
  早稲田大学、東京
- Year and Date
  2015-03-21 – 2015-03-24
- Data Source
  KAKENHI-PROJECT-25249134

1. Takahashi Kazunori (80451491)

# of Collaborated Projects: 6 results

# of Collaborated Products: 13 results
2. OSAKABE Masaki (90280601)

# of Collaborated Projects: 4 results

# of Collaborated Products: 68 results
3. 鷹尾祥典 (80552661)

# of Collaborated Projects: 3 results

# of Collaborated Products: 0 results
4. TAKEIRI Yasuhiko (60179603)

# of Collaborated Projects: 2 results

# of Collaborated Products: 58 results
5. Ando Akira (90182998)

# of Collaborated Projects: 2 results

# of Collaborated Products: 1 results
6. HIDAKA Yoshiki (70274511)

# of Collaborated Projects: 2 results

# of Collaborated Products: 7 results
7. KOBAYASHI Shinji (70346055)

# of Collaborated Projects: 2 results

# of Collaborated Products: 15 results
8. NAKANO Haruhisa (90442524)

# of Collaborated Projects: 2 results

# of Collaborated Products: 80 results
9. KISAKI Masashi (70598945)

# of Collaborated Projects: 2 results

# of Collaborated Products: 64 results
10. TODO Yasushi (00249971)

# of Collaborated Projects: 1 results

# of Collaborated Products: 4 results
11. WATANABE Kiyomasa (00249963)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
12. SAKAKIBARA Satoru (90280594)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
13. SUZUKI Yasuhiro (20397558)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
14. MATSUMOTO Yutaka (40360929)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
15. GOTO Motoshi (00290916)

# of Collaborated Projects: 1 results

# of Collaborated Products: 3 results
16. SDEKI Ryouske (80581066)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
17. TERASAKA Kenichiro (50597127)

# of Collaborated Projects: 1 results

# of Collaborated Products: 7 results
18. MASADA Yohei (30590608)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
19. YOSHIMURA Shinji (50311204)

# of Collaborated Projects: 1 results

# of Collaborated Products: 7 results
20. MIYOSHI Yoshizumi (10377781)

# of Collaborated Projects: 1 results

# of Collaborated Products: 6 results
21. TSUMORI Katsuyoshi (50236949)

# of Collaborated Projects: 1 results

# of Collaborated Products: 46 results
22. IKEDA Katsunori (20321614)

# of Collaborated Projects: 1 results

# of Collaborated Products: 46 results
23. HATAYAMA Akiyoshi (10245607)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
24. TOKUZAWA Tokihiko (90311208)

# of Collaborated Projects: 1 results

# of Collaborated Products: 5 results
25. 山本聡 (70397529)

# of Collaborated Projects: 1 results

# of Collaborated Products: 3 results
26. 國中均 (60234465)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
27. 小室淳史 (70733137)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
28. 宮本賢治 (00532996)

# of Collaborated Projects: 1 results

# of Collaborated Products: 10 results
29. 神尾修治 (80705525)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
30. 波場泰昭 (60908789)

# of Collaborated Projects: 1 results

# of Collaborated Products: 16 results
31. 長崎百伸 (20237506)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
32. 桑原大介 (60645688)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
33. 沼波政倫 (40397203)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
34. 登田慎一郎 (60332186)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
35. 佐藤直木 (60872893)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
36. 江本一磨 (10967227)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
37. HOTTA Sayaka

# of Collaborated Projects: 1 results

# of Collaborated Products: 3 results
38. COOPER W.A.

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
39. PUSTOVITOV V.

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
40. Ascasibar Enrique

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
41. HOSHINO Kazuo

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
42. NISHIYAMA Syusuke

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
43. 長サキ百伸

# of Collaborated Projects: 0 results

# of Collaborated Products: 2 results
44. 渡邊清政

# of Collaborated Projects: 0 results

# of Collaborated Products: 2 results
45. 佐々木浩一

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

Nagaoka Kenichi 永岡 賢一

NAGAOKA Kenichi 永岡 賢一

永岡 賢一 ナガオカ ケンイチ

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Beam extraction boundary physics and control of particle dynamics for steady state negative ion sourcesPrincipal Investigator

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Investigation of boundary structure of ionic pair plasma and development of high perfomance negative ion beamPrincipal Investigator

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Exeprimental study of turbulence transport with symmetry breakingPrincipal Investigator

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Control of anomalous transport of fast ions via external control of Alfven eigenmodePrincipal Investigator

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Experimental simulation of large-scale flow field in solar convection zonePrincipal Investigator

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Nagaoka Kenichi 永岡賢一

NAGAOKA Kenichi 永岡賢一

永岡賢一ナガオカケンイチ