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Development of Method to Separate and Purify New-Function Fullerenes Using a Plasma in a High Magnetic Field Generated by a Superconducting Magnet

Research Project

Project/Area Number 11558051
Research Category

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

Allocation TypeSingle-year Grants
Section展開研究
Research Field プラズマ理工学
Research InstitutionTOHOKU UNIVERSITY

Principal Investigator

SHIMAMOTO Susumu  Tohoku University, Grad. School of Eng., Professor, 大学院・工学研究科, 教授 (00311548)

Co-Investigator(Kenkyū-buntansha) HIRATA Takamichi  Tohoku University, Grad. School of Eng., Research Associate, 大学院・工学研究科, 助手 (80260420)
HATAKEYAMA Rikizo  Tohoku University, Grad. School of Eng., Professor, 大学院・工学研究科, 教授 (00108474)
KANEKO Toshiro  Tohoku University, Grad. School of Eng., Research Associate, 大学院・工学研究科, 助手 (30312599)
SATO Noriyoshi  Tohoku University, Grad. School of Eng., Professor, 大学院・工学研究科, 教授 (40005252)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥12,900,000 (Direct Cost: ¥12,900,000)
Fiscal Year 2000: ¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 1999: ¥8,700,000 (Direct Cost: ¥8,700,000)
KeywordsFullerene Mass Separation / Cyclotron Resonance / Superconducting Magnet, High Field / Helical Antenna / 超伝導コイル・強磁場
Research Abstract

1) A Gifford-McMahon (GM) cryocooled superconducting magnet with a 40-cm-diam and 40-cm-length magnet bore produces the high magnetic field of 4T (max) at the axis center of the bore. A cylindrical vacuum chamber is inserted into the magnet bore and an argon (Ar) plasma is generated by a dc discharge between a spiral-shaped hot tungsten cathode and a tungsten mesh anode located in the upstream region of the chamber in a low pressure argon gas. The oven temperature for sublimation of the fullerenes (C_<60>, C_<70>) is changed to cover the temperature range of 350-400℃. The high energy electrons of the Ar plasma are injected into this oven and ionize the neutral fullerene vapor within the oven.
2) At the first step, an omegatron mass analyzer is used for a fullerene-ion mass separation, the principle of which is based on the ion cyclotron resonance, in order to clarify that the electromagnetic isolation technique is able to be applied to the fullerene whose mass number is very large. As a result, it is found that the frequency spectra yield two peaks, the frequencies of which are in good agreement with the predicted ion-cyclotron frequencies of C_<60> and C_<70>, respectively, when high magnetic field (B=1〜2.4 T) is applied. Furthermore, it is found that the mass resolution M/ΔM increases with an increase in B, reaching M/ΔM=30 at B=2 T.
3) Next, we develop the fullerene-ion mass-separation device using a helical antenna, which can separate and purify the fullerenes at a high rate. This helical antenna can inject a large RF power into the high-density fullerene-plasma. It is also demonstrated that the fullerenes can be separated by this device and the ion current collected at the C_<60> peak increases with an increase in the RF power, which proves the possibility of isolating new-function fullerenes.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (23 results)

All Other

All Publications (23 results)

  • [Publications] T.Murakami: "Two-dimensional quench simulation of composite CuNb/Nb_3Sn conductors"Cryogenics. 40. 393-401 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 寺島潤一: "テスラ級強磁場中フラーレンイオン質量分離の高効率化"プラズマ・核融合学会第17回年会予稿集. 27pA38P. 93-93 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 村上朝之: "複合CuNb/Nb_3Sn線のピンニング力に関する温度スケーリング"低温工学. 35・6. 298-304 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Watanabe: "Normal Zone Propagation Properties in a Cryogenfree Nb_3Sn Coil"Mass And Charge Transport in Inorganic Materials. Part B. 1479-1485 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] K.Watanabe: "Quench Behavior of Nb_3Sn Wires in a Cryocooled Superconductiong Magnet"Advance in Cryogenic Engineering (Materials). 46. 951-957 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 寺島潤一: "ヘリカルアンテナ利用テスラ級強磁場中でのフラーレン質量分離"日本物理学会第56回年会講演概要集. 27aWD4. 145-145 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] MURAKAMI Tomoyuki: "Two-dimensional quench simulation of composite CuNb/Nb_3Sn conductors"Cryogenics. Vol.40. 393-401 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] TERASHIMA Junichi: "Efficiency Increase of Fullerene-Ion Mass Separation in a Very High Magnetic Field"Meeting Abstracts of the Japan Society of Plasma Science and Nuclear Fusion Research. Vol.17. 93 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] MURAKAMI Tomoyuki: "Temperature Scaling on Pinning Force of Composite CuNb/Nb_3Sn Wire"Cryogenic Engineering. Vol.35, No.6. 298-304 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] WATANABE Kazuo: "Normal Zone Propagation Properties in a Cryogenfree Nb_3Sn Coil"Mass And Charge Transport in Inorganic Materials. Part B. 1479-1485 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] WATANABE Kazuo: "Quench Behavior of Nb_3Sn Wires in a Cryocooled Superconductiong Magnet"Advance in Cryogenic Engineering (Materials). Vol.46. 951-957 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] TERASHIMA Junichi: "Fullerene-Ion Mass Separation Using Helical Antenna in Very High Magnetic Field"Meeting Abstracts of the Physical Society of Japan. Vol.56. 145 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] T.Murakami: "Two-dimensional quench simulation of composite CuNb/Nb_3Sn conductors"Cryogenics. 40. 393-401 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 寺島潤一: "テスラ級強磁場中フラーレンイオン質量分離の高効率化"プラズマ・核融合学会第17回年会予稿集. 27pA38P. 93-93 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 村上朝之: "複合CuNb/Nb_3Sn線のピンニング力に関する温度スケーリング"低温工学. 35・6. 298-304 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Watanabe: "Normal Zone Propagation Properties in a Cryogenfree Nb_3Sn Coil"Mass And Charge Transport in Inorganic Materials. Part B. 1479-1485 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Watanabe: "Quench Behavior of Nb_3Sn Wires in a Cryocooled Superconductiong Magnet"Advance in Cryogenic Engineering (Materials). 46. 951-957 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 寺島潤一: "ヘリカルアンテナ利用テスラ級強磁場中でのフラーレン質量分離"日本物理学会第56回年会講演概要集. 27aWD4(印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Murakami: "Study of Plasma Current Start-up of the Middle-sized Tokamak with Force-Balanced Coils"Fusion Engineering and Design. P5-10-47. 315-315 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 寺島 潤一: "GM冷凍式超電導コイル利用の弱電離プラズマ中イオン種分析"プラズマ・核融合学会第16回年会予稿集. 25pB13p. 128-128 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 島本 進: "核融合炉の超電導マグネット開発"電気学会論文誌. 119-B. 1143-1145 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 小泉 徳潔: "分布定数回路モデルを用いた撚り線導体内の常電導転移後電流分布の解析"低温工学学会誌. 34・8. 395-403 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] S.Murase: "Superconducting and Mechanical Properties of Jelly-Roll Processed Cu/Nb3A1 Conductors"IEEE Transactions on Superconductivity. 10(印刷中). (2000)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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