Benchmarking of Atomic Physics Rates and Collisional Radiative Models for Fe, Ni and Si for Laboratory and Astrophysical Plasmas

Details Benchmarking of Atomic Physics Rates and Collisional Radiative Models for Fe, Ni and Si for Laboratory and Astrophysical Plasmas Benchmarking of Atomic Physics Rates and Collisional Radiative Models for Fe, Ni and Si for Laboratory and Astrophysical Plasmas

Nov 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aps..dppfp1103m&link_type=abstract

American Physical Society, 41st Annual Meeting of the Division of Plasma Physics, November 15-19, 1999 Seattle, WA, abstract #FP

Physics

Plasma Physics

Scientific paper

Benchmarking of the atomic physics rates and collisional radiative models for Fe, Ni and Si is relevant for both laboratory and astrophysical plasma physics. This atomic physics is used to determine the charge state distributions, radiative cooling properties and transport/particle confinement in MCF plasmas and electron temperature and density estimates in astrophysical plasmas. Trace amounts of these impurities have been introduced into FTU Tokamak plasmas that have T_e(0) of 2 keV and n_e(0) of 1x10^14 cm-3. Spectra as well as spatial brightness profiles have been obtained from three radially scanable, photometrically calibrated spectrometers in the 1 to 1700Å range. These spectra and spatial brightness profiles have been compared with the simulations from the MIST and Tore Supra transport codes and collisional radiative models from HULLAC to benchmark atomic physics rates. Ionization/recombination rates proposed by Mazzotta were compared with those of Arnaud-Rothenflug/Raymond. The excitation/recombination rates were computed using the HULLAC atomic data package. Work Supported by DOE grant DE-FG02-86ER53214 (JHU) and contract No. W-7405-ENG-48 (LLNL).

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