Electron temperature anisotropy instabilities represented by superposition of streams - Université de Lorraine
Journal Articles Physics of Plasmas Year : 2012

Electron temperature anisotropy instabilities represented by superposition of streams

Abstract

The generation of magnetic field, together with the electrostatic activity met in the saturation regime of the Weibel instability (WI), is investigated by means of an analytical multi-stream model in a Hamiltonian framework. Taking advantage from the invariance of the generalized canonical momentum, the model allows to reduce the full kinetic 1D2V Vlasov equation into several 1D1V equations while keeping its kinetic character. The multi-stream model provides a more complete and accurate picture of the Weibel instability, because it is possible to separate the specific contribution of each stream during the development of the Weibel instability. An interesting result for the multi-stream mode is a lower cost in the perpendicular treatment of the p y momentum component since no differential operator associated with some approximate numerical scheme has to be carried out on this variable. Indeed, a small number of streams or particle classes are sufficient to correctly describe the magnetic field generation and the mixed electrostatic-electromagnetic nature of the instability.
Fichier principal
Vignette du fichier
PoP_multistream_Weibel_2012.pdf (4.95 Mo) Télécharger le fichier
Origin Publisher files allowed on an open archive
Loading...

Dates and versions

hal-01791619 , version 1 (14-05-2018)

Identifiers

Cite

A. Inglebert, A. Ghizzo, T. Reveille, Pierre Bertrand, F. Califano. Electron temperature anisotropy instabilities represented by superposition of streams. Physics of Plasmas, 2012, 19 (12), pp.122109. ⟨10.1063/1.4772770⟩. ⟨hal-01791619⟩
39 View
124 Download

Altmetric

Share

More