Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apjs..127..415l&link_type=abstract
The Astrophysical Journal Supplement Series, Volume 127, Issue 2, pp. 415-422.
Astronomy and Astrophysics
Astronomy
2
Magnetohydrodynamics: Mhd, Plasmas, Relativity
Scientific paper
We derive general nonlinear equations relevant to describe the propagation of powerful pump electromagnetic fields launched within a plasma (underdense or overdense). The powerful pump (such as obtained with short laser pulses) creates nonlinear-induced collective electromagnetic perturbations with matter lying in the relativistic regime. One main result is the self-consistent treatment of the coupled equations between the pump and the perturbations. In particular, the self-generated magnetic field could modify the pump propagation. We point out a mechanism due to the relativistic ponderomotive force (whose derivation is provided) to produce a magnetic field that may be stronger than those fields derived with a non-self-consistent approach. As an application we investigate the possibility of relativistic magnetic guiding of light under the combined action of the self-induced density and magnetic field.
Di Menza Laurent
Lehner Thierry
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