Studies on EUV spectra from highly charged high Z ions using magnetically confined high temperature plasmas

2013 Fiscal Year Final Research Report

• Project/Area Number: 23740412
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Plasma science
• Research Institution: National Institute for Fusion Science
• Principal Investigator: SUZUKI CHIHIRO 核融合科学研究所, ヘリカル研究部, 助教 (30321615)
• Research Collaborator: O'SULLIVAN Gerard University College Dublin, School of Physics, Professor
• Project Period (FY): 2011 – 2013
• Keywords: プラズマ・核融合 / 原子・分子物理 / 光源技術 / 国際情報交換(アイルランド)

Research Abstract

In terms of the development of short wavelength light source and the understanding of impurity behaviors in fusion plasmas, we have observed extreme ultraviolet spectra from highly charged high Z ions of lanthanides, tungsten, bismuth, etc. in optically thin, high temperature plasmas produced in the Large Helical Device (LHD). Spectral feature has drastically changed depending on the electron temperature because of the change in ion abundance. Experimental database has been systematically developed in a wide range of Z. The emission mechanism as well as the dependences on Z and electron temperature has been well understood through the identifications of discrete spectral lines and the comparative analyses with theoretical calculations.

Research Products

• [Journal Article] Extreme ultraviolet spectra from highly charged gadoliniunl and neodymium ions in the Large Helical Device and laser produced plasmas (2013)
  • Author(s): C. Suzuki, F. Koike, I. Murakami, N. Tamura, S. Sudo, C. O'Gornlan, B. Li, C. S. Harte, T. Donnelly and G O'Sullivan
  • Journal Title: Physica Scripta Volume: Vol. T156 Pages: 014078-1-3
  • DOI: 10.1088/0031-8949/2013/T156/014078
  • Peer Reviewed
• [Journal Article] Observation of EUV spectra from gadolinium and neodymiunlions in the Large Helical Device (2012)
  • Author(s): C. Suzuki, F. Koike, I. Murakami, N. Tamura, S. Sudo
  • Journal Title: Journal of Physics B : Atomic, Molecular and Optical Physics Volume: Vol. 45 Pages: 135002-1-6
  • DOI: 10.1088/0953-4075/45/13/135002
  • Peer Reviewed
• [Journal Article] Interpretation of spectral emission around 20 nm region from tungsten ions observed in fusion device plasmas (2011)
  • Author(s): C. Suzuki, C. S. Harte, D. Kilbane, T. Kato, H. A. Sakaue, I. Murakami, (他8名)
  • Journal Title: Journal of Physics B : Atomic, Molecular and Optical Physics Volume: Vol. 44 Pages: 175004-1-7
  • DOI: 10.1088/0953-4075/44/17/175004
  • Peer Reviewed
• [Presentation] Observations of EUV spectra from highly charged heavy ions in optically thin plasmas for benchmarking of models (2013)
  • Author(s): C. Suzuki, F. Koike, I. Murakami, N. Tamura, S. Sudo, T. Higashiguchi and G. O'Sullivan
  • Organizer: 2013 International Workshop on EUV and Soft X-Ray Sources
  • Place of Presentation: Dublin
  • Year and Date: 20131103-07
• [Presentation] EUV spectroscopy of highly charged high Z ions in the Large Helical Device plasnlas (2013)
  • Author(s): C. Suzuki, F. Koike, I. Murakami, N. Tamura, S. Sudo, H. A. Sakaue, N. Nakamura, S. Morita, M. Goto, D. Kato, T. Nakano, T. Higashiguchi, C. S. Harte and G. O'Sullivan
  • Organizer: 11th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas
  • Place of Presentation: Mons
  • Year and Date: 20130805-09
• [Presentation] Interpretation of EUV spectra from tungsten and lanthanide ions observed in the Large Helical Device (2012)
  • Author(s): C. Suzuki, F. Koike, I. Murakami, N. Tamura, S. Sudo, C. S. Harte, G. O'Sullivan
  • Organizer: 22nd International Toki Conference on Cross-Validation of Experiment and Modeling for Fusion and Astrophysical Plasmas
  • Place of Presentation: Toki
  • Year and Date: 20121119-22
• [Presentation] EUV spectra from highly charged gadolinium and neodymium ions in LHD and laser produced plasnlas (2012)
  • Author(s): C. Suzuki, F. Koike, I. Murakami, N. Tamura, S. Sudo, C. 0'Gorman, B. Li, C. S. Harte, T. Donnelly and G. O'Sullivan
  • Organizer: 16th International Conference on the Physics of Highly Charged Ions
  • Place of Presentation: Heidelberg
  • Year and Date: 20120902-07
• [Presentation] Observations of EUV spectra from tungsten and lanthanide ions in LHD (2012)
  • Author(s): C. Suzuki, F. Koike, I. Murakami, T. Kato, M. Goto, T. Nakano, N. Tanlura, S. Sudo, C. S. Harte and G. O'Sullivan
  • Organizer: The 4th China-Japan Joint Seminar on Atomic and Molecular Processes in Plasma
  • Place of Presentation: Lanzhou
  • Year and Date: 20120730-0804
• [Presentation] Interpretation of spectral emission around 20 nm region from tungsten ions observed in fusion device plasmas (2011)
  • Author(s): C. Suzuki, C. S. Harte, D. Kilbane, T. Kato, H. A. Sakaue, I. Murakami, (他8名)
  • Organizer: The 17th International Conference on Atomic Processes in Plasmas
  • Place of Presentation: Belfast
  • Year and Date: 2011-07-20