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Elucidation of a Novel Ion Heating Mechanism Utilizing the Characteristics of Whistler Waves and Its Application Development

Research Project

Project/Area Number 21K03500
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 InstitutionOsaka University

Principal Investigator

Sano Takayoshi  大阪大学, レーザー科学研究所, 准教授 (80362606)

Co-Investigator(Kenkyū-buntansha) 千徳 靖彦  大阪大学, レーザー科学研究所, 教授 (10322653)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsホイッスラー波 / レーザープラズマ / 磁気圏プラズマ / プラズマ粒子加速 / レーザープラズマ相互作用 / プラズマ加熱 / 波動粒子相互作用 / 慣性核融合
Outline of Research at the Start

レーザーなどの電磁波を用いて高密度プラズマ中のイオンを高温に加熱することは、核融合研究などの実験室プラズマにおいて非常に重要かつ困難な課題である。本研究では、臨界密度のないホイッスラー波の伝播特性を利用し、新奇なイオン加熱機構を提唱する。この機構では、定在ホイッスラー波が崩壊することで、レーザーの振動周期程度の極短時間のうちに電磁波からイオンにエネルギーが直接変換される。本研究では、この革新的なイオン加熱機構の実現性を理論的に精査すると同時に、新しい核融合方式の可能性を模索する。このプラズマ加熱機構は幅広い分野の応用研究に展開できると期待している。

Outline of Final Research Achievements

Acceleration and heating of plasmas by electromagnetic waves are essential processes in laboratory laser experiments and various astronomical phenomena. In this study, we show through numerical simulations and theoretical analysis that standing waves created by whistler waves can be a precious physical process that can lead to relativistic electron acceleration and the generation of fusion plasmas. Although very simple, focusing on this conventionally overlooked effect has opened up many applications.

Academic Significance and Societal Importance of the Research Achievements

実験室プラズマとしては、従来困難であったレーザーによるイオン加熱を、電子に邪魔されることなく実現でき、到達温度が数10電子ボルトの核融合プラズマを直接生成することを示した。これは、全く新しいレーザー核融合方式になりうるものである。また、天体応用としては、近年話題の高速電波バーストとよばれるパルス的な発光現象の起源の絞り込みに寄与できる。伝播特性を明らかにすることで、未知の天体現象の解明に今後さらに迫っていけると期待している。

Report

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

    (36 results)

All 2023 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (27 results) (of which Int'l Joint Research: 16 results,  Invited: 8 results) Remarks (2 results)

  • [Int'l Joint Research] ソルボンヌ大学(フランス)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Acceleration of Relativistic Particles in Counterpropagating Circularly Polarized Alfven Waves2023

    • Author(s)
      Isayama, S. ; Takahashi, K. ; Matsukiyo, S. ; Sano, T.
    • Journal Title

      The Astrophysical Journal

      Volume: 946 Issue: 2 Pages: 68-68

    • DOI

      10.3847/1538-4357/acbb6d

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Conditions of structural transition for collisionless electrostatic shock2023

    • Author(s)
      Ly Minh Nhat、Sano Takayoshi、Sakawa Youichi、Sentoku Yasuhiko
    • Journal Title

      Physical Review E

      Volume: 108 Issue: 2 Pages: 025208-025208

    • DOI

      10.1103/physreve.108.025208

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Optimum design of double-layer target for proton acceleration by ultrahigh intense femtosecond lasers considering relativistic rising edge2023

    • Author(s)
      Hata Masayasu、Sano Takayoshi、Iwata Natsumi、Sentoku Yasuhiko
    • Journal Title

      Physical Review E

      Volume: 108 Issue: 3 Pages: 035205-035205

    • DOI

      10.1103/physreve.108.035205

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Demonstration of a spherical plasma mirror for the counter-propagating kilojoule-class petawatt LFEX laser system2022

    • Author(s)
      Kojima Sadaoki他
    • Journal Title

      Optics Express

      Volume: 30 Issue: 24 Pages: 43491-43491

    • DOI

      10.1364/oe.475945

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 定在ホイッスラー波による高速イオン加熱と核融合科学への応用2021

    • Author(s)
      佐野孝好
    • Journal Title

      プラズマ・核融合学会誌

      Volume: 97 Pages: 427-432

    • NAID

      40022686080

    • Related Report
      2021 Research-status Report
  • [Journal Article] Alfv?n Number for the Richtmyer?Meshkov Instability in Magnetized Plasmas2021

    • Author(s)
      Sano Takayoshi
    • Journal Title

      The Astrophysical Journal

      Volume: 920 Issue: 1 Pages: 29-29

    • DOI

      10.3847/1538-4357/ac141e

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] MHD simulation and laser experiment2023

    • Author(s)
      Takayoshi Sano
    • Organizer
      Athena++ Workshop
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Mitigation of shock-driven interfacial instability2023

    • Author(s)
      Takayoshi Sano
    • Organizer
      6th International Conference on Matter and Radiation at Extremes
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Relativistic wave-particle interaction under a strong magnetic field2023

    • Author(s)
      Takayoshi Sano
    • Organizer
      Torino International Conference on Fundamental Plasma Physics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Laser astrophysics experiment on the amplification of magnetic fields by shock-induced interfacial instabilities2023

    • Author(s)
      Takayoshi Sano
    • Organizer
      Protostars and Planets VII
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Relativistic two-wave resonant acceleration of electrons at large-amplitude standing whistler waves during laserplasma interaction2023

    • Author(s)
      T. Sano, S. Isayama, K. Takahashi, and S. Matsukiyo
    • Organizer
      International Conference on High Energy Density Sciences
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Richtmyer-Meshkov instability in magnetized plasmas2023

    • Author(s)
      Takayoshi Sano
    • Organizer
      7th Asia-Pacific Conference on Plasma Physics (AAPPS-DPP)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Relativistic two-wave resonant acceleration of electrons at large-amplitude standing whistler waves during laser-plasma interaction2023

    • Author(s)
      T. Sano, S. Isayama, K. Takahashi, and S. Matsukiyo
    • Organizer
      65th Annual Meeting of the APS Division of Plasma Physics (APS-DPP)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Acceleration of relativistic particles and gamma-ray emission in standing Alfven waves2023

    • Author(s)
      T. Sano, S. Isayama, S. Matsukiyo, K. Sugimoto, and Y. Sentoku
    • Organizer
      65th Annual Meeting of the APS Division of Plasma Physics (APS-DPP)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The impacts of downstream heating on ion reflection for collisionless electrostatic shock2023

    • Author(s)
      M. N. Ly, T. Sano, Y. Sakawa, and Y. Sentoku
    • Organizer
      65th Annual Meeting of the APS Division of Plasma Physics (APS-DPP)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Conditions of structural transition from collisionless electrostatic shock to double-layer structure2023

    • Author(s)
      M. N. Ly, T. Sano, Y. Sakawa, and Y. Sentoku
    • Organizer
      65th Annual Meeting of the APS Division of Plasma Physics (APS-DPP)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A novel scheme of laser-driven proton-boron fusion under an ultra-strong magnetic field2023

    • Author(s)
      T. Sano, M. Hata, S. Fujioka, M. Murakami, Y. Sentoku, and R. Kodama
    • Organizer
      29th IAEA Fusion Energy Conference (FEC 2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Richtmyer-Meshkov instability in magnetized plasmas2023

    • Author(s)
      Takayoshi Sano
    • Organizer
      International school and workshop on Matter in Extreme Conditions for Magnetized PLAsmas (MECMATPLA)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 強磁場中でのレーザープラズマ相互作用とその応用2023

    • Author(s)
      佐野孝好
    • Organizer
      レーザー学会学術講演会第44回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 実験室および天体プラズマにおける大振幅ホイッスラー波の伝播特性2023

    • Author(s)
      佐野孝好,諫山翔伍,松清修一
    • Organizer
      第40回 プラズマ・核融合学会 年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 大振幅ホイッスラー波の伝播特性に対するイオン質量の依存性2023

    • Author(s)
      佐野孝好
    • Organizer
      日本物理学会2023年第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] The impact of downstream heating on ion acceleration for collisionless electrostatic shock2023

    • Author(s)
      Minh Nhat Ly, T. Sano, Y. Sakawa, and Y. Sentoku
    • Organizer
      日本物理学会2023年第78回年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 強磁場中の相対論的波動粒子相互作用2023

    • Author(s)
      佐野孝好
    • Organizer
      ISEE研究会「宇宙プラズマとレーザー生成プラズマにおける粒子加速・加熱」
    • Related Report
      2023 Annual Research Report
  • [Presentation] 相対論的強度のホイッスラー波の伝播特性について2023

    • Author(s)
      佐野孝好, 畑昌育, 千徳靖彦
    • Organizer
      日本物理学会2023年春季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] 強磁場中における相対論的波動粒子相互作用2022

    • Author(s)
      佐野孝好
    • Organizer
      第152回地球電磁気・地球惑星圏学会講演会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 強磁場下における特異な波動粒子相互作用2022

    • Author(s)
      佐野孝好
    • Organizer
      第39回プラズマ・核融合学会年会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Relativistic two-wave resonant acceleration of electrons due to collisions of large-amplitude whistler waves2022

    • Author(s)
      Takayoshi Sano
    • Organizer
      Plasma Explosions in the Universe
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Relativistic two-wave resonant acceleration of electrons by colliding large-amplitude Alfven waves2022

    • Author(s)
      Takayoshi Sano
    • Organizer
      The 9th East Asian Numerical Astrophysics Meeting
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 大振幅アルフベン波衝突によるプラズマ加速と輻射過程2022

    • Author(s)
      佐野孝好, 諌山翔伍, 高橋健太, 松清修一, 杉本馨, 千徳靖彦
    • Organizer
      日本物理学会2022年秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] ホイッスラー波特性を利用した新奇イオン加熱機構2022

    • Author(s)
      佐野孝好
    • Organizer
      レーザー学会学術講演会第42回年次大会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 定在ホイッスラー波による相対論的電子の生成とレーザーイオン加速への応用2021

    • Author(s)
      佐野孝好、諌山翔伍、高橋健太、松清修一
    • Organizer
      日本物理学会第77回年次大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Plasma heating via the interaction of whistler waves2021

    • Author(s)
      T. Sano, Y. Tatsumi, M. Hata, Y. Sentoku
    • Organizer
      International Conference on High Energy Density Science 2021 (HEDS2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] An Alternative Fast Ignition Scheme by Standing Whistler-Wave Heating2021

    • Author(s)
      T. Sano, S. Fujioka, Y. Mori, K. Mima, Y. Sentoku, R. Kodama
    • Organizer
      28th IAEA Fusion Energy Conference (FEC2020)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Remarks] 宇宙線加速の新たな理論モデルを構築 波のエネルギーを宇宙線エネルギーに変換

    • URL

      https://resou.osaka-u.ac.jp/ja/research/2023/20230304_2

    • Related Report
      2023 Annual Research Report
  • [Remarks] 宇宙線加速の新たな理論モデルを構築 波のエネルギーを宇宙線エネルギーに変換

    • URL

      https://resou.osaka-u.ac.jp/ja/research/2023/20230304_2

    • Related Report
      2022 Research-status Report

URL: 

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

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