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Investigation of dynamics of two-fluid plasmas with controlled self-potential by use of non-neutral plasmas

Research Project

Project/Area Number 18H01194
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 Institute of Technology

Principal Investigator

Himura Haruhiko  京都工芸繊維大学, 電気電子工学系, 教授 (30311632)

Co-Investigator(Kenkyū-buntansha) 三瓶 明希夫  京都工芸繊維大学, 電気電子工学系, 准教授 (90379066)
政宗 貞男  京都工芸繊維大学, 電気電子工学系, 教授 (00157182)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2019: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Keywords2流体プラズマ / 純イオンプラズマ / 純電子プラズマ / 非中性プラズマ / 正準角運動量 / プラズマフロー / 差動回転平衡 / 電磁流体力学 / 2流体プラズマ / ネストトラップ / プラズマ流 / 画像解析 / PICシミュレーション / イメージング / ネスト型トラップ
Outline of Final Research Achievements

The BX-U linear trap machine, which we have designed and fabricated ourselves, produces a nested trap with nested potential wells. In this way, we can experimentally superimpose a pure ion plasma consisting of only ions and a pure electron plasma consisting of only electrons, which have been previously relaxed to their corresponding rotational equilibrium states. By this superposition, we succeeded in creating a non-neutral two-fluid plasma in which the electrical neutral condition is broken, and experimentally investigated the dependence of macroscopic plasma equilibrium and stability on the non-neutrality. Regarding the measurements of rotations of ions and electrons in the two-fluid plasma, it was experimentally established that a high-speed camera can be used to capture the shadows produced by the plasma crossing a thin needle installed at the end of the nested potential wells.

Academic Significance and Societal Importance of the Research Achievements

プラズマとは、一般的にはイオン密度と電子密度が等しく全体として電気的中性な電離気体と理解されている。ところが、2流体プラズマとは、この一般的理解から外れるプラズマの捉え方である。2流体プラズマでは、プラズマを構成するのは、イオンプラズマと電子プラズマの2つと分けて考えている。これが2流体プラズマという考え方の特徴であり、理論上では2流体プラズマは存在可能である。これを実験的に検証して、先端プラズマ物理のフロンティアを拡充するという点が、本研究の学術的意義である。

Report

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

    (36 results)

All 2020 2019 2018 Other

All Int'l Joint Research (5 results) Journal Article (8 results) (of which Peer Reviewed: 7 results,  Open Access: 2 results) Presentation (21 results) (of which Int'l Joint Research: 8 results,  Invited: 7 results) Remarks (2 results)

  • [Int'l Joint Research] サスカチェワン大学(カナダ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] ウィスコンシン大学マディソン校/ローレンスリバモア国立研究所/マックスプランク研究所(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] サスカチェワン大学(カナダ)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] ローレンスリバモア国立研究所/ウィスコンシン大学/社団法人ヘリシティースペース(米国)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] サスカチュワン大学(カナダ)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Revisit: principle of transverse flow measurement by using an optical vortex beam in cylindrical coordinates2020

    • Author(s)
      Kitazawa Miki、Himura Haruhiko、Mine Takuya、Kitamura Kyoko
    • Journal Title

      OSA Continuum

      Volume: 3 Issue: 9 Pages: 2470-2470

    • DOI

      10.1364/osac.403980

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Simulations of negative ion extraction and transport for developing novel remote reactive ion processing system2020

    • Author(s)
      Kanki Takashi、Himura Haruhiko、Tsumori Katsuyoshi、Nakano Haruhisa
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SJ Pages: SJJE01-SJJE01

    • DOI

      10.35848/1347-4065/ab7ba8

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Method for Avoiding Following Ion Leakage from a Penning Trap2019

    • Author(s)
      AKAIKE Kiyomasa、HIMURA Haruhiko
    • Journal Title

      Plasma and Fusion Research

      Volume: 14 Issue: 0 Pages: 4401149-4401149

    • DOI

      10.1585/pfr.14.4401149

    • NAID

      130007723653

    • ISSN
      1880-6821
    • Year and Date
      2019-09-09
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Controlling the Diameter of a Pure Electron Plasma to Produce an Exact Two-Fluid Plasma State in a Nested Trap2019

    • Author(s)
      KATO Toshiki、HIMURA Haruhiko、SOWA Shinji、SANPEI Akio
    • Journal Title

      Plasma and Fusion Research

      Volume: 14 Issue: 0 Pages: 1201039-1201039

    • DOI

      10.1585/pfr.14.1201039

    • NAID

      130007649947

    • ISSN
      1880-6821
    • Year and Date
      2019-02-25
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Studies of ion leakage from a Penning trap induced by potential barrier closure2018

    • Author(s)
      Akaike K.、Himura H.
    • Journal Title

      Physics of Plasmas

      Volume: 25 Issue: 12 Pages: 122108-122108

    • DOI

      10.1063/1.5061692

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Observation of macroscopic stability of weakly magnetized Li+ ion beams near the Brillouin density limit2018

    • Author(s)
      Kosuke Furukawa, Haruhiko Himura, Shigefumi Okada, Akio Sanpei, and Sadao Masamune
    • Journal Title

      AIP Conference Proceedings

      Volume: 1928 Pages: 020002-020002

    • DOI

      10.1063/1.5021567

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Two-dimensional macroscopic shapes of lithium ion and electron plasmas after elapse of two-fluid plasma state2018

    • Author(s)
      Shohei Yamada, Haruhiko Himura, Toshiki Kato, Shigehumi Okada, Akio Sanpei, and Sadao Masamune
    • Journal Title

      AIP Conference Proceedings

      Volume: 1928 Pages: 020016-020016

    • DOI

      10.1063/1.5021581

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Recent experiments with lithium ion and electron plasmas in the BX-U linear trap2018

    • Author(s)
      Haruhiko Himura
    • Journal Title

      AIP Conference Proceedings

      Volume: 1928 Pages: 020005-020005

    • DOI

      10.1063/1.5021570

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] 京都工芸繊維大学プラズマ基礎工学研究室2020

    • Author(s)
      比村治彦
    • Organizer
      Fusion2030研究会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] RELAXトカマクフォーメーションの準備と研究計画2020

    • Author(s)
      比村治彦
    • Organizer
      先進トカマク研究会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Investigation of two-fluid plasma state by extending ion skin depth2020

    • Author(s)
      H. Himura
    • Organizer
      4th Asia-Pacific Conference on Plasma Physics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Research Plan for Investigating Canonical Flux Tube of Toroidal Plasmas in RELAX2020

    • Author(s)
      H. Himura
    • Organizer
      The 29th International Toki Conference
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] RELAXプラズマダイナミクスを2流体プラズマとして検証する実験計画2020

    • Author(s)
      比村治彦
    • Organizer
      プラズマ核融合学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 10年後を見据えたプラズマ科学の学術課題2020

    • Author(s)
      比村治彦
    • Organizer
      プラズマ核融合学会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 自己ポテンシャルが存在する中でのイオン流体と電子流体の長時間共存状態の観測2020

    • Author(s)
      曽和真司、比村治彦 他
    • Organizer
      物理学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ネストラップのサイドウェル内で生成するオン種特定実験2020

    • Author(s)
      岡田敏和、比村治彦 他
    • Organizer
      物理学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] BX -U装置における 2流体プラズマの差動回転平衡解導出2020

    • Author(s)
      中島雄太郎、比村治彦 他
    • Organizer
      物理学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ネスト型トラップで2流体プラズマ状態に至るまでに生じる現象のまとめ2019

    • Author(s)
      比村治彦
    • Organizer
      日本物理学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Experiments on exploring two-fluid plasma state produced by pure lithium ion and electron plasmas in the BX-U linear trap2019

    • Author(s)
      Haruhiko Himura
    • Organizer
      APS-DPP
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] RELAXプラズマダイナミクスを2流体プラズマとして検証する実験計画2019

    • Author(s)
      比村治彦
    • Organizer
      プラズマ・核融合学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] BX-Uでの2流体プラズマ実験を精緻に遂行するための 擬イオンの抑制とイオンプラズマ安定密度域の特定2019

    • Author(s)
      岡田勝志郎、比村治彦、他
    • Organizer
      プラズマ・核融合学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 2流体差動回転プラズマ平衡の存在を示唆する観測データ2019

    • Author(s)
      曽和真司、比村治彦、他
    • Organizer
      プラズマ・核融合学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 非中性度をパラメータとした2流体プラズマ実験2019

    • Author(s)
      岡田敏和、比村治彦、他
    • Organizer
      日本物理学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Recent experiments with lithium ion and electron plasmas in the BX-U linear trap2018

    • Author(s)
      Haruhiko Himura
    • Organizer
      International conference on noneutral plasmas
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 非中性プラズマを用いた2流体プラズマ動力学の実験的検証 I2018

    • Author(s)
      比村治彦
    • Organizer
      日本物理学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Superimposition of Li+ ion plasma on e- plasma for producing two-fluid plasma state2018

    • Author(s)
      Haruhiko Himura
    • Organizer
      2018 APS-DPP annual meeting
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Direct observation of two-fluid plasma state by extending ion skin depth in laboratory plasmas2018

    • Author(s)
      Haruhiko Himura
    • Organizer
      2018 US-Japan CT Workshop
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] xperiments on ion leakage from BX-U linear trap during potential barrier closure2018

    • Author(s)
      K. Akaike and H. Himura
    • Organizer
      2nd Asia-Pacific Conference on Plasma Physics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ontrol of diameters of Li+ and e- plasmas for testing two-fluid plasma state2018

    • Author(s)
      T. Kato, H. Himura et al.
    • Organizer
      2nd Asia-Pacific Conference on Plasma Physics
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 京都工芸繊維大学プラズマ基礎工学研究室ホームページ

    • URL

      http://nuclear.es.kit.ac.jp/

    • Related Report
      2020 Annual Research Report
  • [Remarks] 京都工芸繊維大学プラズマ基礎工学研究室

    • URL

      http://nuclear.es.kit.ac.jp/

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report

URL: 

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

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