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1994 Fiscal Year Final Research Report Summary

Development of Highly Pure and Atmosphelic Plasma with No-Electrode

Research Project

Project/Area Number 04558001
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field プラズマ理工学
Research InstitutionTOKYO INSTITUTE OF TECHNOLOGY

Principal Investigator

SHIMADA Ryuichi  Tokyo Institute of Technology, Prof., 原子炉工学研究所, 教授 (40206181)

Co-Investigator(Kenkyū-buntansha) MINO Kaoru  アプリプラズマ(株), 社長(研究職)
TAMAGAWA Touru  東芝(株), レーザ開発担当課長
SUZUKI Masaaki  Tokyo Institute of Technology, Associate Prof., 原子炉工学研究所, 助教授 (70114874)
Project Period (FY) 1992 – 1994
Keywordstoroidal plasma / atmospheric plasma / plasma diagnostics / flow visualization / He ICP / He ICP-MS / mass spectrometry
Research Abstract

A new toroidal gas insulated plasma (GIP) source was designed and (a) quartz, (b) metallic discharge tubes were constructed. Using the gas vortex flow as plasma support gas, it was able to sustain the stable toroidal Ar plasma on the center of discharge tube up to 760 Torr in each discharge tube.
The new GIP source doesn't need preparatory ionization and doesn't have any electrode, so maintenance caused by consumption of electrode isn't needed. Therefore, extremely long time operation is possible. Because the vortex flow of plasma support gas induced that plasma can't touch the discharge tube, so high purity plasma is obtained.
From these characteristics, we are thinking that this GIP source is useful for fields that have problems of impurities in the plasma, for example excitation medium of laser, diamond film preparation, etc.
Furthermore it is consider that this plasma source can be applied to large emission area UV source for industrial use. To generate higher temperature plasma for d … More ecomposition of industrial wastes, for example PCB,enlargement of vessel and power up are needed using metallic discharge tube.
Argon inductively coupled plasma mass spectrometry (Ar ICP-MS) is a multielement technique with excellent detection limits and the added ability to provide isotopic information.To overcome some problems of the Ar ICP,new torch for helium ICP is developed. By the flow visualization using spark tracing method, it is founded that with the conventional torch for Ar ICP,adequate helium gas vortex flow to sustain the stable plasma doesn't form in the plasma generate region. Spatial measurement of helium emission intensity is performed, and generation of doughnut plasma is confirmed. Therefore, we designed and developed new enhanced vortex flow torch for He ICP and stable helium plasma was generated by that torch.
Furthermore, He ICP mass spectrometry (He ICP-MS) device that will have high sensitivity for high ionization energy elements was developed using that torch. Effects of sampler-skimmer distance on the pressure in the 2nd stage and on the ion signal intensities were studied and it was found that both the Mach disk position and the most suitable position for analysis are 7 mm. No background spectral peak was found at m/z values over 32 except for copper from the sampler.
Ion intensities of neon and krypton that were low in sensitivity in argon ICP-MS due to their high ionization energies were as much as 36 and 24 times greater in He ICP-MS,respectively. Less

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] A.Okino,Y.Nomura,H.Ishizuka,K.Mino and R.Shimada: "Generation of Toroidal Plasma-Atmospheric Ar Gas Insulated Plasma Source with Quartz and Metallic Discharge Tube" Proceedings of 6th Symposium on Plasma Science for Materials. 265-270 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 沖野晃俊、宮武健一郎、内田照雄、南茂夫: "ダブルボア放電管を持ったMIP共振器の解析" 分光研究. 42. 289-296 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 沖野晃俊、野村雄二、石塚博明、嶋田隆一、佐藤健、安岡康一、玉川徹: "大気圧トーラス形状高純度プラズマの生成" プラズマ・核融合学会誌. 69. 1242-1249 (1993)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 沖野晃俊、宮武健一郎、内田照雄、南茂夫: "ダブルボア放電管型MIP光源のプラズマ温度および電子密度の測定" 分光研究. 43. 23-30 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 沖野晃俊、石塚博明、田丸浩二、平山一成、嶋田隆一: "発行分光分析のための旋回気流強化型ヘリウム誘導結合プラズマ" 第9回光源物性とその応用研究会資料. 1-8 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 沖野晃俊、石塚博明、野村雄二、嶋田隆一: "旋回気流を強化したヘリウム誘導結合プラズマ用ト-チ" 分析化学. 43. 377-382 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 沖野晃俊、石塚博明、平山一成、野村雄二、嶋田隆一: "旋回気流強化型ヘリウム誘導結合プラズマの分光特性の測定" 分析化学. 43. 685-689 (1994)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Okino,H.Ishizuka,Y.Nomura,E.Hotta and R.Shimada: "Generation of Large-Sized,High-Purity Atmospheric Plasma by Low-Power Input" Conference on Phenomena in Ionized Gases. 4. 133 (1995)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 沖野晃俊、石塚博明、堀田栄喜、嶋田隆一: "旋回気流強化型ト-チを用いたヘリウム誘導結合プラズマ質量分析装置の試作" 分析化学. submitted.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.Okino, Y.Nomura, H.Ishizuka, K.Mino and R.Shimada: "Generation of Toroidal Plasma-Atmospheric Ar Gas Insulated Plasma Source with Quartz and Metallic Discharge Tube-" Proceedings of 6th Symposium on Plasma Science for Materials. 265-270 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Okino, H.Ishizuka, Y.Nomura, E.Hotta and R.Shimada: "Generation of Large-Sized, High-Purity Atmospheric Plasma by Low-Power Input" Conference on Phenomena in Ionized Gases. 4. 133 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K,Mino, H.Ishizuka, Y.Nomura, A.Okino and R.Shimada: "Generation of torus plasma" Abst.6th Symposium on Plasma Science for Materials. 125 (1993)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-03-09  

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