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

Mohammed Koubiti²  Motoshi Goto¹  Sandrine Ferri²  Stephanie B. Hansen³ 

[1] National Institute for Fusion Science, Toki, 509-5292, Japan; E-Mail:;Aix-Marseille Université—CNRS, PIIM UMR7345, 13397 Marseille, France; E-Mail:;Sandia National Laboratories, Albuquerque, NM 87185, USA; E-Mail:

关键词: carbon pellet ablation;    plasma spectroscopy;    LHD;    Stark/Zeeman broadening;    line-shape codes;    atomic physics;   

DOI  :  10.3390/atoms2030319

来源: mdpi

【 摘 要 】

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 (T_e = T_i = 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.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.