Development of Impurity Profile Diagnostics in the Ergodic Layer of LHD using 3 m Normal Incidence VUV Spectrometer

• OISHI Tetsutarou

  National Institute for Fusion Science

• MORITA Shigeru

  National Institute for Fusion Science

• DONG Chunfeng

  National Institute for Fusion Science

• WANG Erhui

  Department of Fusion Science, Graduate University for Advanced Studies

• GOTO Motoshi

  National Institute for Fusion Science

• LHD Experiment Group

抄録

Space-resolved vacuum ultraviolet (VUV) spectroscopy using a 3 m normal incidence spectrometer has been developed in the large helical device (LHD) to study plasma transport in the ergodic layer by measuring the spatial profile of VUV lines from impurities emitted in the wavelength range of 300-3200 Å. Characteristics of the diagnostics system such as line dispersion, observable region and spatial resolution were evaluated. CIV spectra of 1548.20×2 Å were measured clearly. Intensity and ion temperature profiles were obtained simultaneously using CIV emissions in high-density discharges. Dependencies of the CIV intensity profiles on the electron density and magnetic configurations were observed.

収録刊行物

• Plasma and Fusion Research

  Plasma and Fusion Research 8 (0), 2402093-2402093, 2013

  一般社団法人 プラズマ・核融合学会

キーワード

• VUV spectroscopy
• impurity transport
• normal incidence spectrometer
• space-resolved diagnostics
• large helical device
• ergodic layer
• stochastic magnetic field
• carbon ion
• ion temperature measurement

詳細情報

• CRID: 1390282680230121344
• NII論文ID: 130004685109
• DOI: 10.1585/pfr.8.2402093
• ISSN: 18806821
• HANDLE: 10655/10182
• Web Site: https://nifs-repository.repo.nii.ac.jp/records/218
• Web Site: https://www.jstage.jst.go.jp/article/pfr/8/0/8_2402093/_pdf
• 本文言語コード: en
• データソース種別:
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