Possible spectroscopic signature of wave collapse in edge plasmas
In plasmas coupled to an external energy source like a beam of energetic electrons, one can observe the non‐linear coupling of Langmuir waves with ion sound and electromagnetic waves. This non‐linear interaction of waves changes the structural and radiative properties of plasmas. Coherent wave packe...
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| Veröffentlicht in: | Contributions to plasma physics (1988) 2018-07, Vol.58 (6-8), p.583-588 |
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| container_end_page | 588 |
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| container_issue | 6-8 |
| container_start_page | 583 |
| container_title | Contributions to plasma physics (1988) |
| container_volume | 58 |
| creator | Hannachi, I. Meireni, M. Rosato, J. Stamm, R. Marandet, Y. |
| description | In plasmas coupled to an external energy source like a beam of energetic electrons, one can observe the non‐linear coupling of Langmuir waves with ion sound and electromagnetic waves. This non‐linear interaction of waves changes the structural and radiative properties of plasmas. Coherent wave packets are trapped in regions of high intensity, and are subjected to a wave collapse cycle. We show that the electric field of the wave packets can modify the spectral lines emitted by hydrogen atoms. Our model for this field is a sequence of envelope solitons oscillating at the plasma frequency or the upper hybrid frequency. The calculations presented concern the Hα and Hβ Balmer lines of hydrogen and show the possible modifications of the line shapes if wave collapse conditions affect the edge plasma. |
| doi_str_mv | 10.1002/ctpp.201700164 |
| format | Article |
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This non‐linear interaction of waves changes the structural and radiative properties of plasmas. Coherent wave packets are trapped in regions of high intensity, and are subjected to a wave collapse cycle. We show that the electric field of the wave packets can modify the spectral lines emitted by hydrogen atoms. Our model for this field is a sequence of envelope solitons oscillating at the plasma frequency or the upper hybrid frequency. The calculations presented concern the Hα and Hβ Balmer lines of hydrogen and show the possible modifications of the line shapes if wave collapse conditions affect the edge plasma.</description><identifier>ISSN: 0863-1042</identifier><identifier>EISSN: 1521-3986</identifier><identifier>DOI: 10.1002/ctpp.201700164</identifier><language>eng</language><publisher>Weinheim: WILEY‐VCH Verlag GmbH & Co. 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| identifier | ISSN: 0863-1042 |
| ispartof | Contributions to plasma physics (1988), 2018-07, Vol.58 (6-8), p.583-588 |
| issn | 0863-1042 1521-3986 |
| language | eng |
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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Collapse Electromagnetic radiation Electromagnetic waves Hydrogen atoms Langmuir waves line shape Line spectra Physics Plasmas Quantum Physics Solitary waves Spectral emittance stark broadening turbulence wave collapse Wave packets |
| title | Possible spectroscopic signature of wave collapse in edge plasmas |
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