Stark broadening by Lorentz fields in tokamak edge plasmas

22nd International Conference on Spectral Line Shapes

Rosato, J.^1 ; Seguineaud, G.^1 ; Marandet, Y.^1 ; Stamm, R.^1

Aix-Marseille Université, CNRS, PIIM UMR 7345, Marseille Cedex 20

F-13397, France^1

关键词: Balmer lines;    Edge plasmas;    Frame of reference;    Hydrogen lines;    Lorentz field;    Motional stark effects;    Stark broadenings;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/548/1/012011/pdf
DOI  :  10.1088/1742-6596/548/1/012011

来源: IOP

【 摘 要 】

We report calculations of hydrogen line shapes in tokamak edge plasma conditions. A special emphasis is put on the motional Stark effect that arises due to the electric field × present in the frame of reference of an atom moving at a velocity . The statistical repartition of the velocities results in a broadening of the lines, which can be significant if the upper level of the transition under consideration is high. Applications to Balmer lines are shown here.