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Generation and propagation of electromagnetic waves resonantly excited by a heating wave near the electron cyclotron frequency.

Research Project

Project/Area Number 09480089
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field プラズマ理工学
Research InstitutionKYOTO UNIVERSITY (1998)
University of Tsukuba (1997)

Principal Investigator

KIWAMOTO Yasuhito  Kyoto University, Fac.of Integrated Human Stucies professor, 総合人間学部, 教授 (50018040)

Co-Investigator(Kenkyū-buntansha) YUYAMA Tetsumori  Kyoto University, Fac.of Integrated Human Studies Research Associate, 総合人間学部, 助手 (90026815)
TATEMATSU Yoshinori  University of Tsukuba, Institute of Physics Assistant Professor, 物理学系, 講師 (50261756)
SAITO Teruo  University of Tsukuba, Institute of Physics Associate Professor, 物理学系, 助教授 (80143163)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥6,600,000 (Direct Cost: ¥6,600,000)
Fiscal Year 1998: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1997: ¥5,200,000 (Direct Cost: ¥5,200,000)
Keywordsplasma / electron cyclotron heating / resonance / cyclotron emission / nonlinear wave / phase-bunching / orbit-modification / プラズマ / 挟帯域電磁波発生 / 電子サイクロトロン共鳴 / プラズマの波動加熱 / 非線形波動相互作用 / ジャイロトロン
Research Abstract

In electron cyclotron heating (ECH) of tenuous plasmas in a magnetic beach configuration, two resonant processes complicates physical analyses, i.e. divergent increase of the parallel wave number and synchronized acceleration of increasing number of resonantly gyrating electrons. In this task, we have made a new trial to look into the process in terms of frequency-spectrum-analyses of electromagnetic waves excited in the cyclotron range under the stimulation of a strong monochromatic heating wave.
We have constructed a compact sensitive diagnostic system that fit in a narrow accessible pace for diagnoses of a hot plasma in a tandem mirror, We have observationally confirmed a broad-band spectrum that is attributable to cyclotron emissions by individual hot electrons.
New finding in this research is a strong narrow band spectrum at a few per-cent above the heating wave frequency. The peak frequency and the width decreases with increasing power of the heating wave, and the spectral structure depends on the magnetic field profile. We conclude that this narrow-band wave is generated by a resonant group of electrons which are phase-modulated in the velocity space under ECU and spatially bunched in the magnetic slope to generate coherent emissions at the local cyclotron frequency.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (30 results)

All Other

All Publications (30 results)

  • [Publications] K.Ito, Y.Kiwamoto, T.Saito, Y.Tatematsu, et al.: "Observation of cyclotron waves resonantly excited under electron cyclotron resonance heating at magnetic beach" Journal of Plasma and Fusion Research. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Saito, M.Ichimura, Y.Kiwamoto, A.Mase, et al.: "Enhanced axial loss of electrons from a tandem mirror induced by an Alfven ion cyclotron wave" Physical Review Letters. 82. 1169-1172 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] I.Katanuma, Y.Kiwamoto, Y.Tatematsu, et al.: "On the Continuous Plug Potential Profile in a Tandem Mirror" Physics of Plasmas. 15. 1560-1562 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Kiwamoto, Y.Kikuchi, T.Takahashi, T.Saito, et al.: "Pinhole Camera Imaging of X-rays and Energetic Neutral Atoms for Hot Plasma Diagnostics" Review of Scientific Instruments. 69. 2574-2575 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Kiwamoto, T.Tamano, T.Saito, Y.Tatematsu, et al.: "Anisotropic Hot Plasma in the GAMMA 10 Tandem Mirror with Minimum B Inboard Anchors" Plasma Physics Reports(Fizika Plasmy). 23. 732-741 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Tatematsu, Y.Kiwamoto, T.Saito, I.Katanuma, at al.: "Non-Relativistic Response Function for Higher Harmonic Electron Cyclotron Resonance Heating" Physics of Plasmas. 14. 2972-2981 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Ito, Y.Kiwamoto, T.Saito, Y.Tatematsu, et al.: "Observation of cyclotron waves resonantly excited under electron cyclotron resonance heating at magnetic beach"" Jouranl of Plasma and Fusion Research. (to be published). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Saito, M.Sakakibara, Y.Kiwamoto, et al.: ""Use of a semiconductor detector for measurement of high energy end loss ions from a tandem mirror"" Review of Scientific Instruments. Vol.68, No.3. 1433-1437 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] I.Katanuma, Y.Kiwamoto, Y.Tatematsu, et al.: ""Plug Potential Formation in a Tandem Mirror"" Physics of Plasmas. Vol.4, No.7. 2532-2543 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Kiwamoto, H.Abe, Y.Tatematsu, T.Saito, et al.: ""Thermographic Temperature Determination of Gray Materials with an Infrared Camera in Different Environments"" Review of Scientific Instruments. Vol.68, No.6. 2422-2427 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Kikuchi, Y.Kiwamoto, T.Takahashi, T.Saito, et al.: ""In-situ calibration of microchannel-plate-based x-ray pinhole camera for observation of magnetically trapped plasma"" Review of Scientific Instruments. Vol.68, No.9. 3421-3425 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Kajiwara, T.Saito, Y.Kiwamoto, Y.Tatematsu, et al.: ""Current Balance at an Endplate of the GAMMA10 Tandem Mirror"" Journal of Phys.Soc.Japan. Vol.66, No.8. 2342-2349 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Tatematsu, Y.Kiwamoto, T.Saito, et al.: ""Non-Relativistic Response Function for Higher Harmonic Electron Cyclotron Resonance Heating"" Physics of Plasmas. Vol.4, No.8. 2972-2981 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Kiwamoto, T.Tamano, T.Saito, et al.: ""Anisotropic Hot Plasma in the GAMMA 10 Tandem Mirror with Minimum-B Inboard Anchors."" Plasma Physics Reports(Fizika Plasmy). Vol.23, No.9. 732-741 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Yoshimura, T.Saito, Y.Kiwamoto, Y.Tatematsu, et al.: ""Potential Distribution in the End Region of the GAMMA 10 Tandem Mirror Associated with Electron Flow Control"" Journal of Phys.Soc.Japan. Vol.66 No.11. 3461-3469 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Saito, Y.Tatematsu, Y.Kiwamoto, H.Miyaue, et al.: ""Effects of Anisotropy of End Loss Electrons on Axial Potential Profile and Electron Transport in the End Region of a Tandem Mirror"" Journal of Phys.Soc.Japan. Vol.66 No.12. 3809-3814 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Kiwamoto, Y.Kikuchi, T.Takahashi, T.Saito, et al.: ""Pinhole Camera Imaging of X-rays and Energetic Neutral Atoms for Hot Plasma Diagnostics"" Review of Scientific Instruments. Vol.69 No.6. 2574-2575 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Kajiwara, T.Saito, H.Miyaue, Y.Tatematsu, Y.Kiwamoto, et al.: ""Validity of a Model Electron Distribution Function in an End Region of a Tandem Mirror"" Journal of Phys.Soc.Japan. Vol.67, No.10. 3647-3648 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] K.Ito,Y.Kiwamoto,T.Saito,Y.Tatematsu,et al.: "Observation of cyclotron waves resonantly excited under electron cyclotron resonance heating at magnetic beach" Journal of Plasma and Fusion Research. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Saito,M.Ichimura,Y.Kiwamoto,A.Mase,et al.: "Enhanced axial loss of electrons from a tandem mirror induced by an Alfven ion cyclotron wave" Physical Review Letters. Vol.82,No.6. 1169-1172 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] I.Katanuma,Y.Kiwamoto,Y.Tatematsu,et al.: "On the Continuous Plug Potential Profile in a Tandem Mirror" Physics of Plasmas. Vol.5,No.5. 1560-1562 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Kiwamoto,Y.Kikuchi,T.Takahashi,T.Saito,et al.: "Pinhole Camera Imaging of X-rays and Energetic Neutral Atoms for Hot Plasma Diagnostics" Review of Scientific Instruments. Vol.69,No.6. 2574-2575 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Kiwamoto,T.Tamano,T.Saito,Y.Tatematsu,et al.: "Anisotropic Hot Plasma in the GAMMA 10 Tandem Mirror with Minimum B Inboard Anchors" Plasma Physics Reports(Fizika Plasmy). Vol.23,No.9. 732-741 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Tatematsu,Y.Kiwamoto,T.Saito,I.Katanuma,et al.: "Non-Relativistic Response Function for Higher Harmonic Electron Cyclotron Resonance Heating" Physics of Plasmas. Vol.4,No.8. 2972-2981 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Kiwamoto, H.Abe, Y.Tatematsu, T.Saito, et al.: "Thermographic Temperature Determination of Gray Materials with an Infrared Camera in Different Environments" Review of Scientific Instruments. 68・6. 2422-2427 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Kikuchi, Y.Kiwamoto, T.Takahashi, T.Saito, et al.: "In-situ calibration of microchannel-plate-based x-ray pinhole camera for observation of magnetically trapped plasma" Review of Scientific Instruments. 68・9. 3421-3425 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Tatematsu, Y.Kiwamoto, T.Saito, et al.: "Non-Relativistic Response Function for Higher Harmonic Electron Cyclotron Resornance Heating" Physics of Plasmas. 4・8. 2972-2981 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Kiwamoto, T.Tamano, T.Saito, et al.: "Anisotropic Hot Plasma in the GAMMA 10 Tandem Mirror with Minimum B Inboard Anchors" Plasma Physics Reports. 23・9. 732-741 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Yoshimura, T.Saito, Y.Kiwamoto, et al.: "Potential Distribution in the End Region of the GAMMA 10 Tandem mirror Associated with Electron Flow Control" Journal of Phys.Soc.Japan. 66・11. 3461-3469 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Saito, Y.Tatematsu, Y.Kiwamoto, et al.: "Effects of Anisotropy of End Loss Electrons on Axial Potential Profile and Electron Transport in the End Region of a Tandem Mirror" Journal of Phys.Soc.Japan. 66・12. 3809-3814 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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