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Soliton formation at critical density in laser-irradiated plasmas

Published online by Cambridge University Press:  13 March 2009

D. Anderson ,
A. Bondeson  and
M. Lisak
D. Anderson
Affiliation:
Institute for Electromagnetic Field Theory and EURATOM-FUSION Research (EUR-NE), Chalmers University of Technology, S-412 96 Göteburg, Sweden
A. Bondeson
Affiliation:
Institute for Electromagnetic Field Theory and EURATOM-FUSION Research (EUR-NE), Chalmers University of Technology, S-412 96 Göteburg, Sweden
M. Lisak
Affiliation:
Institute for Electromagnetic Field Theory and EURATOM-FUSION Research (EUR-NE), Chalmers University of Technology, S-412 96 Göteburg, Sweden
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Abstract

The generation of Langmuir solitons at the resonance layer in a plasma irradiated by a strong high-frequency pump is investigated. The process is modelled by the nonlinear Schrödinger equation including an external pump, a density gradient and linear damping. The evolution equation is reformulated as an exact variational principle and the one-soliton generation process is studied by substituting various trial solutions. The applicability conditions for the nonlinear Schrödinger equation are re-examined and found to be more restrictive than previously stated.

Type
Research Article
Information
Journal of Plasma Physics , Volume 22 , Issue 2 , October 1979 , pp. 339 - 352
Copyright
Copyright © Cambridge University Press 1979

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References

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