Atoms (Sep 2017)

Effect of Turbulence on Line Shapes in Astrophysical and Fusion Plasmas

  • Ibtissem Hannachi,
  • Mutia Meireni,
  • Paul Génésio,
  • Joël Rosato,
  • Roland Stamm,
  • Yannick Marandet

DOI
https://doi.org/10.3390/atoms5040034
Journal volume & issue
Vol. 5, no. 4
p. 34

Abstract

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We look at the effect of wave collapse turbulence on a hydrogen line shape in plasma. An atom immersed in plasma affected by strong Langmuir turbulence may be perturbed by a sequence of wave packets with a maximum electric field magnitude that is larger than the Holtsmark field. For such conditions, we propose to calculate the shape of the hydrogen Lyman α Lyman β and Balmer α lines with a numerical integration of the Schrödinger equation coupled to a simulation of a sequence of electric fields modeling the effects of the Langmuir wave. We present and discuss several line profiles of Lyman and Balmer lines.

Keywords