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Challenge to triboluminescence mechanism from plasma spectroscopy

Research Project

Project/Area Number 20K20962
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 18:Mechanics of materials, production engineering, design engineering, and related fields
Research InstitutionKyoto University

Principal Investigator

Masahiro Hasuo  京都大学, 工学研究科, 教授 (40218433)

Project Period (FY) 2020-07-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2020: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords破壊発光 / 摩擦発光 / プラズマ分光診断 / 水素原子発光 / カメラレンズエシェル分光器 / 電子密度 / ガス密度 / プラズマ分光
Outline of Research at the Start

固体を勢い良く破壊すると摩擦発光や破壊発光と呼ばれる発光が起こることが知られている。身近な例として、氷砂糖を暗い部屋の中で破壊すると青白い発光が肉眼で確認されることが挙げられる。本研究では、摩擦発光を破壊応力によって生じた表面電荷による亀裂界面間の放電に伴う発光との仮説のもと、高効率な分光器の開発によるプラズマ分光診断法を駆使して、亀裂界面間のガス密度、電子密度、電場を評価し、そのメカニズムに迫る。

Outline of Final Research Achievements

We have constructed a sample destruction chamber, in which gas pressure can be controlled, and a high-throughput camera lens Echelle spectrometer. We destroyed a sucrose crystal in a hydrogen gas and measured its high resolution triboluminescence spectrum over a wavelength range of 400-950 nm with a observation spatial range of 0.2 mm × 0.1 mm. We successfully measured the Balmer alpha and beta emission line spectra simultaneously for a single destruction, and estimated the electron and gas densities of the plasma, which causes the triboluminescence, from the analysis of these spectra.

Academic Significance and Societal Importance of the Research Achievements

固体を勢い良く破壊すると破壊発光や摩擦発光と呼ばれる発光が生じ、その生成メカニズムとして固体破壊時の応力により帯電した亀裂面間の放電が予想されている。しかし、どのようなプラズマが生じるのかなど、その詳細な挙動は明らかではない。本研究では、破壊発光に対してプラズマ分光診断の手法を適用することにより、破壊発光を生成するプラズマの電子密度、ガス密度の推定可能性を実証した。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (6 results)

All 2023 2022 2021 2020

All Journal Article (4 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (2 results)

  • [Journal Article] Corrigendum to “Ro-vibrational population distribution in the ground state of hydrogen isotopologues in LHD peripheral plasmas deduced from emission spectroscopy” [J. Quant. Spectrosc. Radiat. Transfer 267 (2021) 107592]2022

    • Author(s)
      H. Ishihara, A. Kuzmin, M. Kobayashi, T. Shikama, K. Sawada, S. Saito, H. Nakamura, K. Fujii and M. Hasuo
    • Journal Title

      J. Quant. Spectrosc. Radiat. Transfer

      Volume: 291 Pages: 108316-108316

    • DOI

      10.1016/j.jqsrt.2022.108316

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [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

      J. Plasma Fusion Res.

      Volume: 98 Pages: 20-32

    • Related Report
      2021 Research-status Report
  • [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
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Plasma Spectroscopy on an Aluminum-Pellet Ablation Cloud in an LHD Plasma with an Echelle Spectrometer2020

    • Author(s)
      H. Tanaka, K. Fujii, T. Shikama, S. Morita, M. Goto and M. Hasuo
    • Journal Title

      Atoms

      Volume: 8 Issue: 4 Pages: 81-81

    • DOI

      10.3390/atoms8040081

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 水素ガス中での氷砂糖トライボルミネッセンスの広波長域高分解プラズマ分光2023

    • Author(s)
      谷口太一,北川柚葉,久富瑞稀,黒澤大河,Kuzmin Arseniy,四竃泰一,蓮尾昌裕
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 高効率ラマン計測に向けたカメラレンズエシェル分光器の開発2020

    • Author(s)
      黒澤大河、福田紘平、藤井恵介、四竈泰一、蓮尾昌裕
    • Organizer
      2020年日本分光学会年次講演会
    • Related Report
      2020 Research-status Report

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Published: 2020-08-03   Modified: 2024-01-30  

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