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Clarification of the complexity of ion dynamics interacted with waves

Research Project

Project/Area Number 18K03574
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 14010:Fundamental plasma-related
Research InstitutionKyushu University

Principal Investigator

Ikezoe Ryuya  九州大学, 応用力学研究所, 准教授 (70582849)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywords複雑性 / イオンダイナミクス / 時系列データ解析 / C-Hマップ / 高エネルギーイオン / アルベン波動 / ピッチ角散乱 / イオン検出器 / 時系列データ / 順列エントロピー / イオンサイクロトロン共鳴 / アルベン波 / 波動粒子相互作用 / 波動 / ミラー捕捉 / Jensen-Shannon複雑性 / 無衝突プラズマ / 磁化プラズマ
Outline of Final Research Achievements

We analyzed the complexity of time-series data with the aim of understanding the process of determining complexity in high-temperature magnetized plasmas. How to obtain a signal that strongly reflects a specific physical process is important in experiments. In this study, we focused on the characteristics of high-temperature mirror plasma and measured the high-energy ion flux transported along the magnetic field lines by interaction with waves with high accuracy. We have succeeded in investigating the complexity of ion dynamics, which reflects the interaction with waves that was not visible in plasmas dominated by Coulomb collisions. Experiments have shown that evaluation using Jensen-Shannon complexity and permutation entropy is sensitive to waves, and that the effects of waves through pitch angle scattering change the complexity of ion dynamics.

Academic Significance and Societal Importance of the Research Achievements

太陽風プラズマは非常に多スケールの乱流が発達しているためにストキャスティックな信号を示すと言われていますが、実験室プラズマではそうではありません。物理素過程と信号の複雑性についての理解を深めることで、多点計測が困難な宇宙プラズマで起きている現象と地上での実験結果とをリンクさせて解明したり、核融合炉の実現に求められる乱流輸送の理解へと繋げることが可能です。本研究では磁力線に沿って流れてくるイオンを高時間分解能で直接測定できる検出器とプラズマ実験装置を用い、波動がイオンの統計的複雑性に影響することを実験で初めて示しました。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (11 results)

All 2021 2020 2019 2018

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (6 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Observation of Ion Heating Using the Difference Frequency of Two ICRF Waves in GAMMA 10/PDX2021

    • Author(s)
      Hiroki KAYANO, Seowon JANG, Mafumi HIRATA, Naomichi EZUMI, Hibiki YAMAZAKI, Kairi SUGATA, Takumi AIZAWA, Daichi NOGUCHI, Doyeon KIM, Yudai SUGIMOTO, Reina MATSUURA, Ryuya IKEZOE, Masayuki YOSHIKAWA, Makoto ICHIMURA and Mizuki SAKAMOTO
    • Journal Title

      Plasma and Fusion Research

      Volume: 16 Issue: 0 Pages: 2402045-2402045

    • DOI

      10.1585/pfr.16.2402045

    • NAID

      130008022670

    • ISSN
      1880-6821
    • Year and Date
      2021-03-12
    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Measurement of End-Loss Ions Originated from Spontaneously Excited High Frequency Waves by Using an MCP Detector on GAMMA 10/PDX2019

    • Author(s)
      Koki IZUMI, Ryuya IKEZOE, Makoto ICHIMURA, Mafumi HIRATA, Mizuki SAKAMOTO, Shuhei SUMIDA, Seowon JANG, Atsuto TANAKA, Yushi KUBOTA, Ryo SEKINE, Hiroki KAYANO and Yousuke NAKASHIMA
    • Journal Title

      Plasma and Fusion Research

      Volume: 14 Issue: 0 Pages: 2402033-2402033

    • DOI

      10.1585/pfr.14.2402033

    • NAID

      130007633131

    • ISSN
      1880-6821
    • Year and Date
      2019-02-12
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of the Potential of Confined Plasma on End-Loss Ion in GAMMA 10/PDX2019

    • Author(s)
      Seowon JANG, Makoto ICHIMURA, Mafumi HIRATA, Ryuya IKEZOE, Mizuki SAKAMOTO, Shuhei SUMIDA, Koki IZUMI, Atsuto TANAKA, Yushi KUBOTA, Ryo SEKINE, Hiroki KAYANO and Yousuke NAKASHIMA
    • Journal Title

      Plasma and Fusion Research

      Volume: 14 Issue: 0 Pages: 2402032-2402032

    • DOI

      10.1585/pfr.14.2402032

    • NAID

      130007633128

    • ISSN
      1880-6821
    • Year and Date
      2019-02-12
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Observation of Density Fluctuations Originated from RF Waves with Two-Channel Reflectometer in GAMMA 10/PDX2019

    • Author(s)
      Ryo SEKINE, Ryuya IKEZOE, Seowon JANG, Mafumi HIRATA, Makoto ICHIMURA, Mizuki SAKAMOTO, Shuhei SUMIDA, Koki IZUMI, Atsuto TANAKA, Yushi KUBOTA, Hiroki KAYANO and Yousuke NAKASHIMA
    • Journal Title

      Plasma and Fusion Research

      Volume: 14 Issue: 0 Pages: 2402011-2402011

    • DOI

      10.1585/pfr.14.2402011

    • NAID

      130007603424

    • ISSN
      1880-6821
    • Year and Date
      2019-01-24
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A Full Wave Simulation on the Density Dependence of a Slow Wave Excitation in the GAMMA 10/PDX Central Cell with TASK/WF3D2019

    • Author(s)
      Ryuya IKEZOE, Yushi KUBOTA, Makoto ICHIMURA, Mafumi HIRATA, Shuhei SUMIDA, Seowon JANG, Koki IZUMI, Atsuto TANAKA, Ryo SEKINE, Hiroki KAYANO, Yoriko SHIMA, Junko KOHAGURA, Masayuki YOSHIKAWA, Mizuki SAKAMOTO, Yousuke NAKASHIMA and Atsushi FUKUYAMA
    • Journal Title

      Plasma and Fusion Research

      Volume: 14 Issue: 0 Pages: 2402003-2402003

    • DOI

      10.1585/pfr.14.2402003

    • NAID

      130007603325

    • ISSN
      1880-6821
    • Year and Date
      2019-01-24
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Observation of plasma heating by waves with Difference-Frequency of two ICRF waves in the GAMMA 10/PDX2020

    • Author(s)
      Hiroki KAYANO, Seowon JANG, Mafumi HIRATA, Naomichi EZUMI, Hibiki YAMAZAKI, Kairi SUGATA, Takumi AIZAWA, Daichi NOGUCHI, Doyeon KIM, Yudai SUGIMOTO, Reina MATSUURA, Ryuya IKEZOE, Masayuki YOSHIKAWA, Makoto ICHIMURA and Mizuki SAKAMOTO
    • Organizer
      29th International Toki Conference on Plasma and Fusion Research
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] GAMMA 10/PDX セントラル部での印加波動に起因するICRF差周波波動によるイオン加熱の計測2020

    • Author(s)
      栢野大樹 他
    • Organizer
      第37回プラズマ・核融合学会年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Experimental evaluation of complexity of ions interacted with high-frequency waves in a mirror field2019

    • Author(s)
      R. Ikezoe, T. Onchi, S. Jang, M. Ichimura, M. Hirata
    • Organizer
      61th Annual Meeting of the APS Division of Plasma Physics
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 実験室高温ミラープラズマにおけるアルベンイオンサイクロトロン波動の励起とその役割2019

    • Author(s)
      池添竜也、市村真
    • Organizer
      「実験室・宇宙プラズマ研究集会」「あらせサイエンス会議・解析ワークショップ」合同研究集会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Statistical analyses of a high-energy ion transport on GAMMA 10/PDX2018

    • Author(s)
      Ryuya Ikezoe, Seowon Jang, Koki Izumi, Makoto Ichimura, Mafumi Hirata, Takumi Onchi
    • Organizer
      60th Annual Meeting of the APS Division of Plasma Physics
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 高温ミラープラズマ中の高エネルギーイオン輸送 に含まれる統計情報の抽出2018

    • Author(s)
      池添 竜也、ジャン ソウォン、泉 昂希、市村 真、平田 真史、恩地 拓己
    • Organizer
      第35回プラズマ・核融合学会年会
    • Related Report
      2018 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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