Doppler Spectroscopy and Tomography of Plasmas

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概要

• 論文の詳細を見る

• The interpretation of Doppler broadened spectral line shapes for extended radiating media, such as flames and discharges, is complicated by the spatial inhomogeneity of the source. In this paper, we consider the conditions under which the Doppler tomography problem is invertible. For media in drifting thermal equilibrium, it is found that the visibility of fringes produced by modulated or fixed-delay quadrature interferometers deliver the Radon transform of a quantity related to the inhomogeneous temperature distribution. In view of this, we introduce novel imaging polarization interferometers suitable for high spectral and temporal resolution plasma Doppler tomography. One such system has been used to obtain images of ion spectral-line brightness and temperature for low-field rf-heated argon discharges in the H-1NF heliac. Tomographic reconstructions for a number of different plasma régimes are presented.

• 社団法人 プラズマ・核融合学会の論文

著者

• MICHAEL Clive

  National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan

• HOWARD John

  Plasma Research Laboratory, Australian National University, Canberra ACT 0200, Australia

• GLASS Fenton

  FOM-Institute for Plasma Physics, Rijnhuizen

関連論文

• Abrupt Flushing of High-Density Core in Internal Diffusion Barrier Plasmas and its Suppression by Plasma Shape Control in LHD
• Spatial Heterodyne Spectro-Polarimetry Systems for Imaging Key Plasma Parameters in Fusion Devices
• Particle Transport and Fluctuation Characteristics around the Neoclassically Optimized Configuration in LHD
• Improvements of CO2 Laser Heterodyne Imaging Interferometer for Electron Density Profile Measurements on LHD
• Measurements of Micro-Turbulence in High Beta and High Density Regimes of LHD and Comparison with Resistive G-Mode Scaling
• Instrumental Capabilities and Limitations of Two-Dimensional Phase Contrast Imaging on LHD
• Doppler Spectroscopy and Tomography of Plasmas
• Interpretation of Line-Integrated Signals from 2-D Phase Contrast Imaging on LHD

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