Open AccessEffect of Wave Collapse on Lyman and Balmer lines
Author(s) -
Ibtissem Hannachi,
Mutia Meireni,
J. Rosato,
R. Stamm,
Y. Marandet
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1289/1/012034
Subject(s) - physics , wave packet , envelope (radar) , computational physics , dispersion relation , plasma , atomic physics , quantum electrodynamics , optics , quantum mechanics , telecommunications , radar , computer science
The nonlinear coupling of Langmuir, ion sound and electromagnetic waves can create wave collapse conditions in a plasma, and modify the line shapes emitted by hydrogen atoms. Such conditions may appear in the presence of a strong source of energy, and create numerous regions where wave packets localize and the plasma density is decreased. We use a model of envelope solitons for the electric field acting on the emitter, and calculate the dipole autocorrelation function and the line shape with a numerical simulation. We investigate the role of the frequency of wave packets, and propose an approach retaining a dispersion relation ω(k).