A self-consistent analytical model for the upstream magnetic-field and ion-beam properties in Weibel-mediated collisionless shocks | Zendy

C. Ruyer | Zendy; L. Grémillet | Zendy; G. Bonnaud | Zendy; C. Riconda | Zendy

Open Access

A self-consistent analytical model for the upstream magnetic-field and ion-beam properties in Weibel-mediated collisionless shocks

Author(s) -

C. Ruyer,

L. Grémillet,

G. Bonnaud,

C. Riconda

Publication year - 2017

Publication title -

physics of plasmas

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.75

H-Index - 160

eISSN - 1089-7674

pISSN - 1070-664X

DOI - 10.1063/1.4979187

Subject(s) - physics , weibel instability , plasma , coalescence (physics) , magnetic field , instability , ion , atomic physics , shock (circulatory) , turbulence , upstream (networking) , particle in cell , beam (structure) , ion beam , computational physics , mechanics , nuclear physics , optics , quantum mechanics , medicine , computer network , astrobiology , computer science

International audienceA theoretical and numerical analysis is carried out for turbulent collisionless shocks mediated by the ion-Weibel instability during high-velocity plasma collisions. We develop a simple model based on the coalescence dynamics of the ion current filaments, which predicts the spatio-temporal evolution of the magnetic fluctuations formed in the upstream plasma region. From comparison with particle-in-cell simulations, our model is shown to correctly capture the magnetic-field and ion-beam properties during the early-time shock propagation

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