Effect of Wave Collapse on Lyman and Balmer lines
| Autor: | M. Meireni, Joël Rosato, I. Hannachi, Roland Stamm, Yannick Marandet |
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| Přispěvatelé: | Physique des interactions ioniques et moléculaires (PIIM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Journal of Physics: Conference Series Journal of Physics: Conference Series, 2019, 1289 (1), pp.012034. ⟨10.1088/1742-6596/1289/1/012034⟩ |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/1289/1/012034 |
| Popis: | 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). |
| Databáze: | OpenAIRE |
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