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Development of spectroscopic diagnostic methods for magnetically confined plasmas using high sensitivity measurements of Stark and Zeeman effects

Research Project

Project/Area Number 21H01054
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 14010:Fundamental plasma-related
Research InstitutionKyoto University

Principal Investigator

Shikama Taiichi  京都大学, 工学研究科, 准教授 (80456152)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2023: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
Keywords近赤外分光 / 周辺プラズマ / 逆変換 / マイクロ波 / ECH / シュタルク効果 / ゼーマン効果 / 分光
Outline of Research at the Start

磁場閉じ込め核融合炉の開発では、今後、ITERやDEMOをはじめとする強磁場・大電力加熱の実験が中心となり、電磁場を利用したプラズマ診断の重要性が高まると考えられる。電磁場を利用した診断は、分光ではシュタルク・ゼーマン効果による輝線の波長分裂を用いて行われるが、標準的な可視分光の場合、これらの分裂は線幅に隠されてしまい精密計測が難しい。そこで本研究では、シュタルク・ゼーマン効果と線幅の波長依存性の違いに着目し(前者は2乗、後者は1乗以下に比例)、近赤外分光を使ってシュタルク・ゼーマン効果を高感度で計測する。この結果得られる精密な電磁場情報を利用することで、2種類の革新的プラズマ診断を実現する。

Outline of Final Research Achievements

Using high-sensitivity measurements of the Stark and Zeeman effects on near-infrared hydrogen and helium atomic emission line spectra, we conducted research to achieve two plasma diagnostic methods. Task 1 focused on spatial resolution of atomic emission line spectra through high-sensitivity measurements of the Zeeman effect. Task 2 aimed to diagnose microwave electric field vectors through high-sensitivity measurements of the AC Stark effect. A high-wavelength-resolution, high-throughput near-infrared spectroscopic system was constructed for this purpose. In Task 1, we conducted experiments targeting helium atomic emission lines and achieved spatial resolution using passive spectroscopy along a single line of sight. In Task 2, we conducted experiments targeting deuterium atomic emission lines and observed spectral shape changes that may indicate the presence of the AC Stark effect.

Academic Significance and Societal Importance of the Research Achievements

課題1では,可視輝線を用いて行われた先行研究と比較して空間分解能が向上し,磁場が弱い装置でも計測を行うことが可能となった.今後,計測対象を水素原子や不純物原子・イオン(希ガス,酸素,タングステン等)の輝線に広げることができれば,原型炉や商用炉への実装につながることが期待される.課題2では,大電力マイクロ波を用いたドレスト原子生成はこれまでほとんど研究例がなく,新たな試みである.今後,検出を確定できれば,新たなドレスト原子応用分野を開拓できる可能性がある.

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (38 results)

All 2024 2023 2022 2021 Other

All Journal Article (13 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 12 results,  Open Access: 7 results) Presentation (20 results) (of which Int'l Joint Research: 4 results,  Invited: 3 results) Remarks (5 results)

  • [Journal Article] Evaluation of the Electron Temperature of the Ablation Cloud for the Small-Size Hydrogen Pellet Using Paschen Series in Heliotron J2024

    • Author(s)
      IWATA Akihiro、KADO Shinichiro、MOTOJIMA Gen、SHIKAMA Taiichi、MURAKUMO Minato、MORI Atsuki、OKADA Hiroyuki、MINAMI Takashi、OHSHIMA Shinsuke、INAGAKI Shigeru、KIN Fumiyoshi、KOBAYASHI Shinji、ISHIZAWA Akihiro、NAKAMURA Yuji、KONOSHIMA Shigeru、MIZUUCHI Tohru、NAGASAKI Kazunobu
    • Journal Title

      Plasma and Fusion Research

      Volume: 19 Issue: 0 Pages: 1402017-1402017

    • DOI

      10.1585/pfr.19.1402017

    • ISSN
      1880-6821
    • Year and Date
      2024-03-25
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Comparison of electron temperature and density measured by helium line intensity ratio and Thomson scattering methods in ECH spherical tokamak plasma2024

    • Author(s)
      Komiyama Takumi、Shikama Taiichi、Hanada Kazuaki、Ido Takeshi、Onchi Takumi、Kono Kaori、Ejiri Akira、Hasegawa Makoto、Inoue Satoshi、Hasuo Masahiro、Idei Hiroshi、Yue Qilin、Kuroda Kengo、Higashijima Aki、Prapan Pakkapawn
    • Journal Title

      Plasma Physics and Controlled Fusion

      Volume: 66 Issue: 4 Pages: 045018-045018

    • DOI

      10.1088/1361-6587/ad2c2a

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Spectroscopic measurement of increases in hydrogen molecular rotational temperature with plasma-facing surface temperature and due to collisional-radiative processes in tokamaks2023

    • Author(s)
      Yoneda N.、Shikama T.、Scotti F.、et al.
    • Journal Title

      Nuclear Fusion

      Volume: 63 Issue: 9 Pages: 096004-096004

    • DOI

      10.1088/1741-4326/acd4d1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Atomic and ionic hydrogen flux probe for quantitative in-situ monitoring of hydrogen recycling2023

    • Author(s)
      Kuzmin A.、Miura K.、Kobayashi M.、Hanada K.、Fujii K.、Shikama T.、Hasuo M.、Zushi H.
    • Journal Title

      Fusion Engineering and Design

      Volume: 189 Pages: 113462-113462

    • DOI

      10.1016/j.fusengdes.2023.113462

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Near-infrared Stokes spectropolarimetry of fusion-related toroidal plasmas2022

    • Author(s)
      Shikama Taiichi
    • Journal Title

      Reviews of Modern Plasma Physics

      Volume: 6 Issue: 1 Pages: 39-39

    • DOI

      10.1007/s41614-022-00098-w

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spatially resolved measurement of helium atom emission line spectrum in scrape-off layer of Heliotron J by near-infrared Stokes spectropolarimetry2022

    • Author(s)
      Tomoki Chatani, Taiichi Shikama, Yohei Ueno, Shinichiro Kado, Hayato Kawazome, Takashi Minami, Ryota Matoike, Minato Murakumo, Shinji Kobayashi, Shinsuke Ohshima, Akihiro Iwata, Tetsutaro Oishi, Akihiro Ishizawa, Yuji Nakamura, Hiroyuki Okada, Shigeru Konoshima, Tohru Mizuuchi, Kazunobu Nagasaki, Masahiro Hasuo
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 15567-15567

    • DOI

      10.1038/s41598-022-19747-8

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Measurement of <b>Pa</b><sub><i>α</i></sub> line from pellet ablation cloud in Heliotron J2022

    • Author(s)
      Iwata A.、Kado S.、Murakumo M.、Shikama T.、Motojima G.、Mori A.、Feng C.、Okada H.、Minami T.、Ohshima S.、Kobayashi S.、Ishizawa A.、Nakamura Y.、Konoshima S.、Mizuuchi T.、Nagasaki K.
    • Journal Title

      Review of Scientific Instruments

      Volume: 93 Issue: 11 Pages: 113537-113537

    • DOI

      10.1063/5.0101885

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] All-optical thermometry using a single multimode fiber endoscope and diamond nanoparticles containing nitrogen vacancy centers2022

    • Author(s)
      Ishikawa Lisa、Shikama Taiichi、Kakuno Takayuki、Watanabe Takato、Jouda Mazin、Hasuo Masahiro
    • Journal Title

      Review of Scientific Instruments

      Volume: 93 Issue: 8 Pages: 083705-083705

    • DOI

      10.1063/5.0102531

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 表面分析と分光計測によって明らかになった 水素原子分子の炉内分布と輸送2022

    • Author(s)
      花田和明,四竈泰一,藤井恵介,KUZMIN Arseniy,米田奈生,蓮尾昌裕,後藤基志,小林政弘
    • Journal Title

      プラズマ・核融合学会誌

      Volume: 98 Pages: 20-32

    • Related Report
      2021 Annual Research Report
    • Open Access
  • [Journal Article] Toroidal flow measurements of impurity ions in QUEST ECH plasmas using multiple viewing chords emission spectroscopy2021

    • Author(s)
      Yoneda N.、Shikama T.、Hanada K.、Mori S.、Onchi T.、Kuroda K.、Hasuo M.、Ejiri A.、Matsuzaki K.、Osawa Y.、Peng Y.、Kawamata Y.、Sakamoto S.、Idei H.、Ido T.、Nakamura K.、Nagashima Y.、Ikezoe R.、Hasegawa M.、Higashijima A.、Nagata T.、Shimabukuro S.
    • Journal Title

      Nuclear Materials and Energy

      Volume: 26 Pages: 100905-100905

    • DOI

      10.1016/j.nme.2021.100905

    • NAID

      130007648858

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Investigation of radial distribution of atomic hydrogen flux to the plasma facing components in steady state discharges in QUEST tokamak2021

    • Author(s)
      Kuzmin A.、Kobayashi M.、Hanada K.、Idei H.、Onchi T.、Mori S.、Yoneda N.、Shikama T.、Hasuo M.、Ido T.、Nagashima Y.、Ikezoe R.、Hasegawa M.、Kuroda K.、Kono K.、Matsuo S.、Nagata T.、Shimabukuro S.、Higashijima A.、Niiya I.、Zushi H.
    • Journal Title

      Nuclear Materials and Energy

      Volume: 26 Pages: 100872-100872

    • DOI

      10.1016/j.nme.2020.100872

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ro-vibrational population distribution in the ground state of hydrogen isotopologues in LHD peripheral plasmas deduced from emission spectroscopy2021

    • Author(s)
      Hiroki Ishihara , Arseniy Kuzmin, Masahiro Kobayashi, Taiichi Shikama, Keiji Sawada , Seiki Saito , Hiroaki Nakamura, Keisuke Fujii , Masahiro Hasuo, the LHD Experiment Group
    • Journal Title

      Journal of Quantitative Spectroscopy & Radiative Transfer

      Volume: 267 Pages: 107592-107592

    • DOI

      10.1016/j.jqsrt.2021.107592

    • NAID

      120007184719

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Overview of recent progress on steady state operation of all-metal plasma facing wall device QUEST2021

    • Author(s)
      Hanada K.、Yoshida N.、Hasegawa M.、Oya M.、Oya Y.、Takagi I.、Hatayama A.、Shikama T.、Idei H.、Nagashima Y.、Ikezoe R.、Onchi T.、Kuroda K.、Kawasaki S.、Higashijima A.、Nagata T.、Shimabukuro S.、Nakamura K.、Murakami S.、Takase Y.、Gao X.、Liu H.、Qian J.
    • Journal Title

      Nuclear Materials and Energy

      Volume: 27 Pages: 101013-101013

    • DOI

      10.1016/j.nme.2021.101013

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] JT-60SAの視線積分近赤外D原子輝線スペクトルにおける主プラズマ制動放射の影響計算2024

    • Author(s)
      守田常裕,四竈泰一,仲野友英,他
    • Organizer
      日本物理学会2024年春季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ヘリオトロンJプラズマ中のヘリウム原子近赤外輝線の直線・円偏光分光2023

    • Author(s)
      守田常裕,四竈泰一,村雲南斗,他
    • Organizer
      日本物理学会 第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] プラズマ発光計測用高速・高波長分解空間ヘテロダイン分光器のスループット最適化2023

    • Author(s)
      M. Xu,四竃泰一,村雲南斗,他
    • Organizer
      日本物理学会 第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] QUEST ECH放電の温度・密度分布計測におけるヘリウム線強度比法とトムソン散乱法の比較2023

    • Author(s)
      四竈泰一,小宮山拓海,花田和明,他
    • Organizer
      日本物理学会 第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 核融合プラズマ中水素ペレットプラズモイドのパッシェンα線偏光分光2023

    • Author(s)
      村雲南斗,四竈泰一,門信一郎,他
    • Organizer
      2023年度 日本分光学会年次講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] JT-60SAダイバータの近赤外輝線スペクトル視線積分計算によるプラズマ診断の検討2023

    • Author(s)
      守田常裕,四竈泰一,仲野友英,他
    • Organizer
      第40回 プラズマ・核融合学会 年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 高時間・波長分解プラズマ分光に向けた空間ヘテロダイン分光器の性能評価2023

    • Author(s)
      M. Xu,四竃泰一,村雲南斗,他
    • Organizer
      第40回 プラズマ・核融合学会 年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 磁場閉じ込めプラズマの近赤外分光2023

    • Author(s)
      四竈泰一
    • Organizer
      NIFS 研究会「プラズマの分光診断と原子分子素過程の研究フロンティア」
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] へリオトロンJ 中水素ペレット溶発プラズマのパッシェンα線ゼーマン効果計測2023

    • Author(s)
      村雲南斗, 四竈泰一, 門信一郎, 大島慎介, 鈴木琢土, 茶谷智樹, et al.
    • Organizer
      日本物理学会 2023年春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 磁場閉じ込めプラズマからの近赤外輝線に対する空間ヘテロダイン分光法の開発2023

    • Author(s)
      M. Xu, 四竃泰一, 村雲南斗, 門信一郎, 蓮尾昌裕
    • Organizer
      日本物理学会 2023年春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Spectroscopic measurement of a compact helium ECR discharge produced in a simple cusp field2022

    • Author(s)
      T. Shikama, T. Komiyama, M. Oki and M. Hasuo
    • Organizer
      75th APS GEC Sendai, Japan 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of a polarization-resolved spatial heterodyne spectrometer for high wavelength resolution and high throughput measurement of near-infrared atomic emission lines in magnetically confined toroidal plasmas2022

    • Author(s)
      M. Xu, T. Shikama, M. Murakumo, S. Kado and M. Hasuo
    • Organizer
      75th APS GEC Sendai, Japan 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] へリオトロンJ 中水素ペレット溶発プラズマのパッシェンα線ゼーマン効果計測2022

    • Author(s)
      村雲南斗, 四竈泰一, 茶谷智樹, 門信一郎, 大島慎介, 鈴木琢土, et al.
    • Organizer
      日本物理学会 2022年秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 小型カスプ磁場配位ECR放電装置におけるヘリウムプラズマの多視線分光計測2022

    • Author(s)
      小宮山拓海, 四竈泰一, 大木幹也, 蓮尾昌裕
    • Organizer
      日本物理学会 2022年秋季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] QUESTの電子温度・密度分布計測におけるHe I線強度比法とトムソン散乱法の比較2022

    • Author(s)
      小宮山拓海, 四竈泰一, 花田和明, 井戸毅, 恩地拓己, 河野香, et al.
    • Organizer
      核融合科学研究所 「原子分子過程研究の最先端と先進的プラズマ分光計測」「原子分子データ応用フォーラムセミナー」合同研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Near-infrared Stokes spectropolarimetry as a novel local measurement method of atomic line emission in SOL and divertor plasmas2021

    • Author(s)
      T. Shikama, S. Kado, Y. Ueno, T. Chatani, H. Kawazome, T. Minami, et al.
    • Organizer
      AAPPS-DPP2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Development of a near-infrared Stokes spectropolarimetry system for the spatially resolved measurements of atomic emissivity and velocity distribution in the scrape-off-layer of Heliotron J2021

    • Author(s)
      T. Shikama, S. Kado, Y. Ueno, T. Chatani, H. Kawazome, T. Minami, et al.
    • Organizer
      ITC30
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ヘリウム原子輝線のゼーマン効果高感度計測を利用した分光と輸送計算の局所比較2021

    • Author(s)
      茶谷智樹, 四竈泰一, 上野陽平, 門信一郎, 川染勇人, 南貴司, et al.
    • Organizer
      日本物理学会 2021年秋期大会 2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] プラズマ対向壁近傍の水素分子d3Π準位回転温度に影響を与える素過程の検討2021

    • Author(s)
      米田奈生, 四竈泰一, F. Scotti, 花田和明, R. E. Bell, A. Maan, et al.
    • Organizer
      日本物理学会 2021年秋期大会 2021
    • Related Report
      2021 Annual Research Report
  • [Presentation] QUESTにおけるネオントロイダルECRプラズマの多視線可視分光計測2021

    • Author(s)
      井口拓己, 四竈泰一, 小宮山拓海, 福本正勝, 花田和明, 恩地拓己, et al.
    • Organizer
      第38回 プラズマ・核融合学会 年会 2021
    • Related Report
      2021 Annual Research Report
  • [Remarks] 京都大学プレスリリース「水素分子の回転温度を予測し、プラズマ再結合を効果的に起こす」

    • URL

      https://www.t.kyoto-u.ac.jp/ja/research/topics/20230728

    • Related Report
      2023 Annual Research Report
  • [Remarks] EurekAlert! "Fusion model hot off the wall"

    • URL

      https://www.eurekalert.org/news-releases/996755

    • Related Report
      2023 Annual Research Report
  • [Remarks] 京都大学 光工学研究室

    • URL

      http://oel.me.kyoto-u.ac.jp/

    • Related Report
      2023 Annual Research Report
  • [Remarks] 京都大学プレスリリース

    • URL

      https://www.t.kyoto-u.ac.jp/ja/research/topics/k6l1jw

    • Related Report
      2022 Annual Research Report
  • [Remarks] 京都大学大学院工学研究科機械理工学専攻 光工学研究室

    • URL

      http://oel.me.kyoto-u.ac.jp/

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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