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Spectroscopic Studies on Divertor Plasmas

Research Project

Project/Area Number 10680458
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field プラズマ理工学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

KONDO Katsumi  Graduate School of Energy Science, KYOTO UNIVERSITY, Professor, エネルギー科学研究科, 教授 (30026314)

Co-Investigator(Kenkyū-buntansha) NAKAMURA Yuji  Graduate School of Energy Science, KYOTO UNIVERSITY, Asso. Professor, エネルギー科学研究科, 助教授 (20198245)
MIZUUCHI Tohru  Institute of Advanced Energy, KYOTO UNIVERSITY, Asso. Professor, エネルギー理工学研究所, 助教授 (20135619)
SANO Fumimichi  Institute of Advanced Energy, KYOTO UNIVERSITY, Professor, エネルギー理工学研究所, 教授 (70115856)
OKADA Hiroyuki  Institute of Advanced Energy, KYOTO UNIVERSITY, Res. Ass., エネルギー理工学研究所, 助手 (50169116)
BESSHOU Sakae  Graduate School of Energy Science, KYOTO UNIVERSITY, Res. Ass., エネルギー科学研究科, 助手 (00135617)
Project Period (FY) 1998 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 2001: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2000: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1999: ¥1,100,000 (Direct Cost: ¥1,100,000)
Keywordsdivertor / hydrogen / velocity distribution / high-resolution spectrometer / absolute calibration / Hα spectrum / LHD / Heliotron J / リサイクリング / heliotron J / 不純物 / 高Z材 / タングステン / タンタル / TEXTOR-94 / 絶対波長校正装置 / モリブデン / 水素リサイクリング
Research Abstract

[1] Construction of a high-resolution visible spectrometer
It is very important to measure a velocity distribution function of hydrogen atoms in divertor plasmas. In order to measure the velocity distribution function of hydrogen atoms, a high-resolution visible spectrometer has been constructed. The spectrometer is consisted of an Echell grating and 2-dimensional CCD detector. The reciprocal dispersion is 0.0024 nm / pixel and it can resolve the velocity of 1 X 10^3 m/s.
[2] Construction of an absolute wavelength calibration system
In order to calibrate the absolute wavelength of the high-resolution visible spectrometer, a light source of hydrogen and deuterium plasma was constructed. The magnetic field of 1.13 T is applied to the plasma and sigma- and pi-components of Hα and Dα are observed simultaneously. Using six line spectra the reciprocal dispersion of the spectrometer was precisely determined.
[3] Measurement of the fine structure of Hα spectral profile in LHD
In LHD neutral beams maintain high density plasmas for more than 60 seconds. The velocities of the hydrogen atoms in the edge plasmas were measured from the fine Hα spectral profiles. In the initial phase of the discharge the shift of the Hα spectrum was not observed. In the steady state the maximum velocity of 9 x 10^3 m/s toward to the core of the plasma was observed. Moreover an asymmetry of the spectral profile was recognized. This asymmetry was resolved into high and low temperature components, which correspond to 0.1 and 0.4 eV, respectively.

Report

(5 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • 1998 Annual Research Report

Research Products

(30 results)

All Other

All Publications (30 results)

  • [Publications] H.H.Hacker: "Spectra of highly ionized xenon (6〜3Onm) excited in W7-AS plasmas"Applied Physics B. 73. 59-64 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] M.Wada: "Local emission and core concentration of tungsten in TEXTOR-94 plasmas operated with tungsten test and poloidal limiters"Journal of Nuclear Materials. 290・293. 768-772 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Mizuuchi: "Island divertor in a helical-axis heliotron device (Heliotron J)"Journal of Nuclear Materials. 290・293. 678-682 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Obiki: "First Plasmas in Heliotron J"Nuclear Fusion. 41. 833-844 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Obiki: "Profile control and its effects on plasma confinement in Heliotron E"Nuclear Fusion. 39. 1667-1677 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] V. Yu. Sergeev: "Experiments on Li pellet injection into Heliotorn E"Plasma Phys. Control. Fusion. 40. 1785-1801 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] K. Ida: "Formation and termination of high ion temperature mode in heliotron/torsatron plasmas"Plasma Phys. Control. Fusion. 40. 793-797 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] S. Bessho: "Complete integral suppression of Pfirsch-Schluter current in a stellarator plasma in Heliotron E"Phys. Plasmas. 5. 481-485 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Mizuuchi: "Influence of magnetic configuration and heating methods on distribution of diverted plasmas in Heliotron E"Journal of Nuclear Materials. 266-269. 1139-1144 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Obiki: "Profile control and its effects on plasma confinement in Heliotron E"Nuclear Fusion. 39. 1667-1677 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A. Pospieszczykt: "Operation of TEXTOR-94 with a Tungsten Poloidal Main Limiter System"Journal of Plasma and Fusion Research SERIES. 3. 368-247 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Mizuuchi: "Island divertor in a helical-axis heliotron device (Heliotron J)"Jounal of Nuclear Materials. 290-293. 678-682 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Osamu Yamagishi: "Ballooning instabilities in a Heliotron J plasma"Physics of Plasmas. 8. 2750-2759 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H. H. Hacker: "Spectra of highly ionized xenon (6-30nm) excited in W7-AS plasmas"Applied Physics. B 73. 59-64 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] H.H.Hacker: "Spectra of highly ionized xenon (6〜30nm) excited in W7-AS plasmas"Applied Physics B. 73. 59-64 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Wada: "Local emission and core concentration of tungsten in TEXTOR-94 plasmas operated with tungsten test and poloidal limiters"Journal of Nuclear Materials. 290-293. 768-772 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Mizuuchi: "Island divertor in a helical-axis heliotron device (Heliotron J)"Journal of Nuclear Materials. 290-293. 678-682 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Obiki: "First Plasmas in Heliotron J"Nuclear Fusion. 41. 833-844 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] S.Besshou: "Diamagnetic double-loop method for a highly sensitive measurement of energy stored in a Stellarator plasma"Review of Scientific Instruments. 72. 3859-3863 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] M.Wakatani: "Study of helical axis heliotron"Nuclear Fusion. 40. 569-573 (2000)

    • Related Report
      2001 Annual Research Report
  • [Publications] V.V.Chechkin: "Main divertor flows in Heliotron E : their distribution and Dependence on NBI and ECH"Nuclear Fusion. 40. 785-797 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] M.Wakatani: "Study of a helical axis heliotron"Nuclear Fusion. 40. 569-573 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] A.Pospieszczyk: "Operation of TEXTOR-94 with a Tungsten Poloidal Main Limiter System"Journal of Plasma and Fusion Research SERIES. 3. 238-242 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Obiki: "Profile control and its effects on plasma confinement in Heliotron E"Nuclear Fusion. 39. 1667-1677 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] T.Mizuuchi: "Influence of magnetic configuration and heating methods on distribution of diverted plasmas in Heliotron E"Journal of Nuclear Materials. 266-269. 1139-1144 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Ida: "Formation and termination of high ion temperature mode in heliotron/torsatron plasmas"Plasma Physics and controlled Fusion. 40. 793-797 (1998)

    • Related Report
      2000 Annual Research Report
  • [Publications] K.Ida,K.Kondo,他: "Formation and termination of high ion temperature mode in heliotron/torsatron plasmas"Plasma Physics and Controlled Fusion. 40. 793-797 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] V.Sergeev,K.Khlopenkov B.Kuteev,K.Kondo,他: "Experimeents on Li pellet injection into Heliotom E"Plasma Physics and Controlled Fusion. 40. 1785-1801 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Ida,K.Kondo,他: "Formation and termination of high ion temperature mode in heliotron/torsatron plasmas" Plasma Physics and Controlled Fusion. 40. 793-797 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] V.Sergeev,K.Khlopenkov,B.Kuteev,S.Sudo,K.Kondo他: "Experments on Li pellet injection into Heliotron E" Plasma Physics and Controlled Fusion. 40. 1785-1801 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1999-03-31   Modified: 2016-04-21  

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