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Communication Dans Un Congrès Année : 2013

Vlasov simulations of self generated strong magnetic fields in plasmas and laser-plasma interaction

Aurélie Inglebert
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Alain Ghizzo
Thierry Réveillé
Daniele del Sarto
F. Califano

Résumé

A new formulation based on Hamiltonian reduction technique using the invariance of generalized canonical momentum is introduced for the study of relativistic Weibel-type instability. An example of application is given for the current filamentation instability resulting from the propagation of two counter-streaming electron beams in the relativistic regime of the instability. This model presents a double advantage. From an analytical point of view, the method is exact and standard fluid dispersion relations for Weibel or filamentation instabilies can be recovered. From a numerical point of view, the method allows a drastic reduction of the computational time. A 1D multi-stream Vlasov-Maxwell code is developed using such dynamical invariants in the perpendicular momentum space. Numerical comparison with a full Vlasov-Maxwell system has also been carried out to show the efficiency of this reduction technique.
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Dates et versions

hal-01298111 , version 1 (08-12-2016)

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Citer

Aurélie Inglebert, Alain Ghizzo, Thierry Réveillé, Daniele del Sarto, Pierre Bertrand, et al.. Vlasov simulations of self generated strong magnetic fields in plasmas and laser-plasma interaction. IFSA 2011 - SEVENTH INTERNATIONAL CONFERENCE ON INERTIAL FUSION SCIENCES AND APPLICATIONS, 2011, Bordeaux, France. ⟨10.1051/epjconf/20135905014⟩. ⟨hal-01298111⟩
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