Application of Magnetically-Broadened Hydrogenic Line Profiles to Computational Modeling of a Plasma Experiment
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چکیده
Magnetically-broadened hydrogenic line profiles are used, in conjunction with a non-local thermodynamic equilibrium (NLTE) code, to model an optically thick phenomenon in the Alcator C-Mod tokamak fusion experiment. The line profiles, including magnetic field effects as well as Doppler and Stark broadening, have been calculated using Beline and are used in Cretin, a multi-dimensional NLTE radiation transfer code, to study the influence of a magnetic field on emergent spectrum. A midplane Alcator C-Mod MARFE (Multifaceted Axisymmetric Radiation From the Edge), in which the magnetic field strength was changed dynamically from 5.4T down to 2.7T, is simulated and compared with experimental data. Assuming hydrodynamic and radiative equilibrium, MARFE simulations are performed in onedimension with fixed plasma density and temperature profiles. Magnetic broadening effects on the brightness of optically thick Lyman series lines are quantified.
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تاریخ انتشار 2001