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Atoms 2014, 2(3), 319-333; https://doi.org/10.3390/atoms2030319

Line-Shape Code Comparison through Modeling and Fitting of Experimental Spectra of the C ii 723-nm Line Emitted by the Ablation Cloud of a Carbon Pellet

1
Aix-Marseille Université—CNRS, PIIM UMR7345, 13397 Marseille, France
2
National Institute for Fusion Science, Toki, 509-5292, Japan
3
Sandia National Laboratories, Albuquerque, NM 87185, USA
4
Faculty of Physics, Weizmann Institute of Science, Rehovot 7610001, Israel
*
Author to whom correspondence should be addressed.
Received: 9 May 2014 / Revised: 28 May 2014 / Accepted: 25 June 2014 / Published: 14 July 2014
(This article belongs to the Special Issue Spectral Line Shapes in Plasmas)
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Abstract

Various codes of line-shape modeling are compared to each other through the profile of the C ii 723-nm line for typical plasma conditions encountered in the ablation clouds of carbon pellets, injected in magnetic fusion devices. Calculations were performed for a single electron density of 1017 cm−3 and two plasma temperatures (T = 2 and 4 eV). Ion and electron temperatures were assumed to be equal (Te = Ti = T). The magnetic field, B, was set equal to either to zero or 4 T. Comparisons between the line-shape modeling codes and two experimental spectra of the C ii 723-nm line, measured perpendicularly to the B-field in the Large Helical Device (LHD) using linear polarizers, are also discussed. View Full-Text
Keywords: carbon pellet ablation; plasma spectroscopy; LHD; Stark/Zeeman broadening; line-shape codes; atomic physics carbon pellet ablation; plasma spectroscopy; LHD; Stark/Zeeman broadening; line-shape codes; atomic physics
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Koubiti, M.; Goto, M.; Ferri, S.; Hansen, S.B.; Stambulchik, E. Line-Shape Code Comparison through Modeling and Fitting of Experimental Spectra of the C ii 723-nm Line Emitted by the Ablation Cloud of a Carbon Pellet. Atoms 2014, 2, 319-333.

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