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Influence of Helical Trajectories of Perturbers on Stark Line Shapes in Magnetized Plasmas

Laboratoire PIIM, Aix Marseille Universite, CNRS, PIIM UMR 7345, 13397 Marseille, France
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Atoms 2018, 6(1), 12; https://doi.org/10.3390/atoms6010012
Received: 27 January 2018 / Revised: 23 February 2018 / Accepted: 23 February 2018 / Published: 13 March 2018
(This article belongs to the Special Issue Spectral Line Shapes in Plasmas II)
In plasmas subject to a strong magnetic field, the dynamical properties of the microfield are affected by the cyclotron motion, which can alter Stark-broadened lines. We illustrate this effect through calculations of the hydrogen Lyman α line in an ideal one-component plasma. A focus is put on the central Zeeman component. It is shown that the atomic dipole autocorrelation function decreases more slowly if the cyclotron motion is retained. In the frequency domain, this denotes a reduction of the line broadening. A discussion based on numerical simulations and analytical estimates is done. View Full-Text
Keywords: Stark broadening; magnetized plasmas; numerical simulations; cyclotron motion Stark broadening; magnetized plasmas; numerical simulations; cyclotron motion
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Rosato, J.; Ferri, S.; Stamm, R. Influence of Helical Trajectories of Perturbers on Stark Line Shapes in Magnetized Plasmas. Atoms 2018, 6, 12.

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