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不均一高密度媒質中の放電プラズマ現象に関する基礎研究

Research Project

Project/Area Number 09J03235
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Plasma science
Research InstitutionKyoto University

Principal Investigator

占部 継一郎  京都大学, 工学研究科, 特別研究員(DC1)

Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2011: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2010: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2009: ¥700,000 (Direct Cost: ¥700,000)
Keywords大気圧プラズマ / プラズマプロセス / プラズマ分光診断 / レーザ分光計測 / 大気圧非平衡プラズマ / 誘電体バリア放電 / 大気圧プラズマジェット / レーザ吸収分光法 / ICCDカメラ観測 / CO_2レーザヘテロダイン干渉計 / ミリ波透過診断 / レーザ誘起蛍光法
Research Abstract

本研究は,簡便な固体材料プロセスや液体・バイオ応用の実現へ向けた研究が近年盛んに行われている高気圧熱非平衡プラズマ源を対象とし,特に媒質の不均一性や界面の存在に起因した高気圧下に特有なプラズマ生成現象に関して系統的理解を得ることを目的としている.本年度は,通常は空間的に不均一となるアルゴンガス中での誘電体バリア放電の均一化現象に対する基礎研究に加え,高密度媒質中プラズマに一般的に適用可能な新規レーザ吸収分光法の研究開発を行った.
まず,媒質の不均一性と同時に放電の不均一性にも着目した研究である,分子添加アルゴン中誘電体バリア放電に関する研究に進展があった.昨年度までは主にヘリウムガスを用いていたが,放電が空間的に不均一になる欠点をもつアルゴン中でも均一な放電が実現すれば,より安価なプロセス応用が可能となる.本年度は,昨年度より行ってきたアセトン分子による放電均一化に関する実験をまとめた論文を執筆・投稿すると共に,2種のガス流(ヘリウムガス+アルゴン/アセトン混合ガス)を交差させた場合のガス/ガス界面での放電現象についてICCDカメラを用いて詳細に観測した.
さらに,高気圧プラズマ用の新規レーザ分光測定法の研究については,研究の着想から実験装置の選定などの準備を一昨年度より当研究員が中心となって地道に進めてきた成果が本年度になって現れたものである.本実験研究は,コヒーレントかつ広い周波数帯域を持つ光周波数コムを光源として用いた新しい原子吸収分光法の研究であり,プラズマを透過した光周波数コムと測定対象の原子吸収波長近傍の単一波長レーザ光を干渉させることによって,お高密度媒質中でのGHzオーダの吸収スペクトルをスペクトラムアナライザで一括して測定することができる.この新規手法により,従来の原子吸収分光法では片方が必須であったレーザ波長のスキャンと大型分光器の両方が不要となり,今後プラズマ診断だけでなく幅広い分光応用に展開可能な研究内容であると考えている。

Report

(3 results)
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (20 results)

All 2012 2011 2010 2009

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (14 results) Book (1 results)

  • [Journal Article] Discharge-Mode Transition in Jet-Type Dielectric Barrier Discharge Using Argon/Acetone Gas Flow Ignited by Small Helium Plasma Jet2011

    • Author(s)
      K.Urabe, K.Yamada, O.Sakai
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 50 Issue: 11R Pages: 1160021-11

    • DOI

      10.1143/jjap.50.116002

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Temporally-Resolved Imaging of Jet-Type Dielectric Barrier Discharge Using He and Ar/Acetone Crossed Gas Flows2011

    • Author(s)
      K.Urabe, B.L.Sands, O.Sakai, B.N.Ganguly
    • Journal Title

      IEEE Transactions on Plasma Science

      Volume: 39 Issue: 11 Pages: 2294-2295

    • DOI

      10.1109/tps.2011.2111389

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Enhancement of visible Hez emission by infrared laser excitation of He metastable atoms in atmospheric-pressure plasma jet2011

    • Author(s)
      K.Urabe, H.Motomura, O.Sakai, K.Tachibana
    • Journal Title

      Journal of Physics D : Applied Physics

      Volume: 44

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Combined spectroscopic methods for electron-density diagnostics inside atmospheric-pressure glow discharge using He/N_2 gas mixture2011

    • Author(s)
      K.Urabe, O.Sakai, K.Tachibana
    • Journal Title

      Journal of Physics D : Applied Physics

      Volume: 44

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Investigation of discharge mechanisms in helium plasma jet atatmospheric pressure by laser spectroscopic measurements2010

    • Author(s)
      K.Urabe, T.Morita, K.Tachibana, B.N.Ganguly
    • Journal Title

      Journal of Physics D : Applied Physics 43

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Presentation] 光周波数コム干渉分光法の開発とプラズマ診断2012

    • Author(s)
      占部継一郎
    • Organizer
      第59回応用物理学関係連合講演会
    • Place of Presentation
      早稲田大学(東京)
    • Year and Date
      2012-03-18
    • Related Report
      2011 Annual Research Report
  • [Presentation] Frequency-Comb interference Spectroscopy : Development and Application to Atomic Spectroscopy2012

    • Author(s)
      Keiichiro Urabe
    • Organizer
      5th GCOE International Symposium on Photonics and Electronics Science and Engineering
    • Place of Presentation
      Kyoto (Japan)
    • Year and Date
      2012-03-09
    • Related Report
      2011 Annual Research Report
  • [Presentation] Characteristic features of dielectric barrier discharge in argon gas flow with molecular impurities2012

    • Author(s)
      Keiichiro Urabe
    • Organizer
      The 8th EU-Japan Joint Symposium on Plasma Processin
    • Place of Presentation
      Nara (Japan)
    • Year and Date
      2012-01-16
    • Related Report
      2011 Annual Research Report
  • [Presentation] Extraordinary properties of dielectric barier discnarge in argon gas flow triggered by molecular impurities2011

    • Author(s)
      Keiichiro Urabe
    • Organizer
      64th Gaseous Electronics Conference
    • Place of Presentation
      Salt Lake City (USA)
    • Year and Date
      2011-11-18
    • Related Report
      2011 Annual Research Report
  • [Presentation] Spectrally filtered ICCD-camera imaging of dielectric barreir discharge plasma jet using two crossed gas flows2011

    • Author(s)
      Keiichiro Urabe
    • Organizer
      64th Gaseous Electronics Conference
    • Place of Presentation
      Salt Lake City (USA)
    • Year and Date
      2011-11-15
    • Related Report
      2011 Annual Research Report
  • [Presentation] Disctiarge-mode transition of jet-type dielectric barrier discharge in mixed flow of argon gas and acetone vapor2011

    • Author(s)
      Keiichiro Urabe
    • Organizer
      20th International Conference on Plasma Chemistry
    • Place of Presentation
      Philadelphia (USA)
    • Year and Date
      2011-07-26
    • Related Report
      2011 Annual Research Report
  • [Presentation] Observation of He2 Molecular Emission at Intersection of IR Laser Beam and Plasma Plume in DBD Microplasma Jet2011

    • Author(s)
      Keiichiro Urabe
    • Organizer
      6th International Workshop on Microplasmas
    • Place of Presentation
      Paris (France)
    • Year and Date
      2011-04-05
    • Related Report
      2011 Annual Research Report
  • [Presentation] 大気圧低温プラズマジェットの赤外レーザ光交差によるHe_2発光増強現象とその分光診断2011

    • Author(s)
      占部継一郎, 本村英樹, 酒井道, 橘邦英
    • Organizer
      第58回応用物理学関係連合講演会
    • Place of Presentation
      神奈川工科大学(厚木)
    • Year and Date
      2011-03-24
    • Related Report
      2010 Annual Research Report
  • [Presentation] Spatiotemporal structure of electron density inside atmospheric pressure glow discharge measured by spectroscopic methods2010

    • Author(s)
      K.Urabe, O.Sakai, K.Tachibana
    • Organizer
      63rd Gaseous Electronics Coference/7th International Conference on Reactive Plasmas
    • Place of Presentation
      Paris (France)
    • Year and Date
      2010-10-08
    • Related Report
      2010 Annual Research Report
  • [Presentation] 交差ガス流を用いたジェット型誘電体バリア放電の生成と高速時間分解発光観測2010

    • Author(s)
      占部継一郎, B.L.Sands, 酒井道, B.N.Ganguly
    • Organizer
      第71回応用物理学会学術講演会
    • Place of Presentation
      長崎大学(長崎)
    • Year and Date
      2010-09-14
    • Related Report
      2010 Annual Research Report
  • [Presentation] 並行平板型誘電体バリア放電における電子密度分布の分光診断2010

    • Author(s)
      占部継一郎
    • Organizer
      第57回応用物理学関係連合講演会
    • Place of Presentation
      東海大学(平塚)
    • Year and Date
      2010-03-17
    • Related Report
      2009 Annual Research Report
  • [Presentation] Spatial Distribution of Electron Density in a Parallel-plate Dielectric Barrier Discharge Measured by CO_2-laser Heterodyne Interferometry2010

    • Author(s)
      Keiichiro Urabe
    • Organizer
      2^<nd> International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials
    • Place of Presentation
      名城大学(名古屋)
    • Year and Date
      2010-03-08
    • Related Report
      2009 Annual Research Report
  • [Presentation] CO_2レーザヘテロダイン干渉計による大気圧プラズマ中電子密度の空間分布診断2009

    • Author(s)
      占部継一郎
    • Organizer
      第70回応用物理学会学術講演会
    • Place of Presentation
      富山大学(富山)
    • Year and Date
      2009-09-09
    • Related Report
      2009 Annual Research Report
  • [Presentation] Diagnostics of Dielectric Barrier Discharge at Atmospheric Pressure by Laser Spectroscopic Measurements2009

    • Author(s)
      Keiichiro Urabe
    • Organizer
      19^<th> International Symposium on Plasma Chemistry
    • Place of Presentation
      Bochum(Germany)
    • Year and Date
      2009-07-26
    • Related Report
      2009 Annual Research Report
  • [Book] 「CO2 Laser-Optimisation and Application」中の第7章「Heterodyne interferometer for measurement of electron density in high-pressure plasmas」2012

    • Author(s)
      K.Urabe, K.Tachibana
    • Total Pages
      18
    • Publisher
      InTech (Rijeka, Croatia)
    • Related Report
      2011 Annual Research Report

URL: 

Published: 2009-04-01   Modified: 2024-03-26  

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