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Generation of Megatesla magnetic fields by microtube implosion

Research Project

Project/Area Number 20K20910
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 14:Plasma science and related fields
Research InstitutionOsaka University

Principal Investigator

Murakami Masakatsu  大阪大学, レーザー科学研究所, 教授 (80192772)

Project Period (FY) 2020-07-30 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsメガテスラ磁場 / マイクロチューブ / 超高強度レーザー / マイクロチューブ爆縮 / メガテスラ磁場生成
Outline of Research at the Start

本応募の目的は「これまで人類が達成したよりも更に1000倍以上高い前人未踏のメガテス ラ(MT)級磁場を生成するための新たな物理コンセプトを提起すると共に、その萌芽物理を 解明し学理を構築する」ことである。これまで人類が地上で実現した最大の磁場強度は1 ~ 2キロテスラ(kT)のオーダーであるが、仮に、kTを更に3桁上回るメガテスラ(MT)の磁場 が実証されれば、これまで議論の俎上にさえ載らなかったような量子論効果や宇宙物理の 未開拓領域において、実験室での能動的な基礎研究が展開できる可能性が出てくることに なり、基礎科学に及ぼすインパクトは計り知れない。

Outline of Final Research Achievements

Microtube implosions are a novel scheme to generate ultrahigh magnetic fields of the megatesla order. These implosions are driven by ultraintense and ultrashort laser pulses. Using two- and three-dimensional particle simulations where megatesla-order magnetic fields can be achieved, we demonstrate scaling and criteria in terms of laser parameters, such as laser intensity and laser energy, to facilitate practical experiments toward the realization of extreme physical conditions, which have yet to be realized in laboratories. Microtube implosions should provide a new platform for studies in fundamental and applied physics relevant to ultrahigh magnetic fields.

Academic Significance and Societal Importance of the Research Achievements

メガテスラという極超高強磁場に関して今回発見された物理機構に基づき、今後、これまで議論の俎上にさえ載らなかったような量子電磁力学(QED)効果や極限パラメータ下での物性研究、さらには中性子星やブラックホール近傍において予測されているメガテスラ磁場に関連した宇宙物理など、未踏の研究領域に対する実験室での能動的な基礎研究が展開できることになる。キロテスラを更に千倍上回るメガテスラ級の極超高磁場が地上で実現されれば、前人未踏の基礎科学分野の開拓・発展と共に多岐に渡る応用も視野に入ってくる。

Report

(3 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • Research Products

    (16 results)

All 2022 2021 2020 Other

All Int'l Joint Research (4 results) Journal Article (6 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 6 results,  Open Access: 5 results) Presentation (4 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results) Remarks (2 results)

  • [Int'l Joint Research] UCSD(米国)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] UPM(スペイン)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] ELI(チェコ)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] マドリッド工科大学(スペイン)

    • Related Report
      2020 Research-status Report
  • [Journal Article] 100-kT magnetic field generation using paisley targets by femtosecond laser?plasma interactions2022

    • Author(s)
      Zosa M.-A. H.、Gu Y. J.、Murakami M.
    • Journal Title

      Applied Physics Letters

      Volume: 120 Issue: 13 Pages: 132403-132403

    • DOI

      10.1063/5.0081115

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Laser scaling for generation of megatesla magnetic fields by microtube implosions2021

    • Author(s)
      Shokov D.、Murakami M.、Honrubia J.J.
    • Journal Title

      High Power Laser Science and Engineering

      Volume: 9 Pages: 1-17

    • DOI

      10.1017/hpl.2021.46

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Magnetic field amplification driven by the gyro motion of charged particles2021

    • Author(s)
      Gu Yan-Jun、Murakami Masakatsu
    • Journal Title

      Scientific Reports

      Volume: 11 Issue: 1 Pages: 1-12

    • DOI

      10.1038/s41598-021-02944-2

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Generation of megatesla magnetic fields by intense-laser-driven microtube implosions2020

    • Author(s)
      Murakami M.、Honrubia J. J.、Weichman K.、Arefiev A. V.、Bulanov S. V.
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1

    • DOI

      10.1038/s41598-020-73581-4

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Strong surface magnetic field generation in relativistic short pulse laser?plasma interaction with an applied seed magnetic field2020

    • Author(s)
      Weichman K、Robinson A P L、Murakami M、Arefiev A V
    • Journal Title

      New Journal of Physics

      Volume: 22 Issue: 11 Pages: 113009-113009

    • DOI

      10.1088/1367-2630/abc496

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sign reversal in magnetic field amplification by relativistic laser-driven microtube implosions2020

    • Author(s)
      Weichman K.、Murakami M.、Robinson A. P. L.、Arefiev A. V.
    • Journal Title

      Applied Physics Letters

      Volume: 117 Issue: 24 Pages: 244101-244101

    • DOI

      10.1063/5.0027466

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 100-kT magnetic field generation using paisley targets by femtosecond laser plasma interactions2022

    • Author(s)
      M-A.H.Zosa
    • Organizer
      OPIC2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Laser scaling for generation of megatesla magnetic fields2021

    • Author(s)
      M. Murakami
    • Organizer
      HPLSE2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Generation of megatesla magnetic fields by microtube implosion2021

    • Author(s)
      M. Murakami
    • Organizer
      NLWP2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Generation of Megatesla magnetic fields by intense-laser-driven microtube implosion2021

    • Author(s)
      M. Murakami
    • Organizer
      The 4th international simposium on High Power Laser and Science and Engineering
    • Related Report
      2020 Research-status Report
  • [Remarks] Quest for ultrahigh field generation

    • URL

      https://www.youtube.com/watch?v=eL4w1uGRk4U

    • Related Report
      2021 Annual Research Report
  • [Remarks] プラズマ・流体物理学(TLP)グループ紹介動画

    • URL

      https://www.youtube.com/watch?v=2mlavyy7V2I&t=138s

    • Related Report
      2021 Annual Research Report

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Published: 2020-08-03   Modified: 2023-01-30  

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