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Title: Electromagnetic field generation in the downstream of electrostatic shocks due to electron trapping
Authors: Stockem, A.
Grismayer, T.
Fonseca, R. A.
Silva, L. O.
Issue Date: 2014
Publisher: American Physical Society
Abstract: A new magnetic field generation mechanism in electrostatic shocks is found, which can produce fields with magnetic energy density as high as 0.01 of the kinetic energy density of the flows on time scales ∼104ω−1pe. Electron trapping during the shock formation process creates a strong temperature anisotropy in the distribution function, giving rise to the pure Weibel instability. The generated magnetic field is well confined to the downstream region of the electrostatic shock. The shock formation process is not modified, and the features of the shock front responsible for ion acceleration, which are currently probed in laser-plasma laboratory experiments, are maintained. However, such a strong magnetic field determines the particle trajectories downstream and has the potential to modify the signatures of the collisionless shock.
Description: WOS:000341271100005 (Nº de Acesso Web of Science)
Peer reviewed: Sim
DOI: 10.1103/PhysRevLett.113.105002
ISSN: 0031-9007
Publisher version: The definitive version is available at:
Appears in Collections:CTI-RI - Artigos em revistas científicas internacionais com arbitragem científica

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