Density filament and helical field line structures in three dimensional Weibel-mediated collisionless shocks

Toseo Moritaka, Youichi Sakawa, Yasuhiro Kuramitsu, Taichi Morita, Yuta Yamaura, Taishi Ishikawa, Hideaki Takabe

Research output: Contribution to journalConference article

Abstract

Collisionless shocks mediated by Weibel instability are attracting attention for their relevance to experimental demonstrations of astrophysical shocks in high-intensity laser facilities. The three dimensional structure of Weibel-mediated shocks is investigated through a fully kinetic particle-in-cell simulation. The structures obtained are characterized by the following features: (i) helical magnetic field lines elongated in the direction upstream of the shock region, (ii) high and low density filaments inside the helical field lines. These structures originate from the interaction between counter-streaming plasma flow and magnetic vortexes caused by Weibel instability, and potentially affect the shock formation mechanism.

Original languageEnglish
Article number012072
JournalJournal of Physics: Conference Series
Volume688
Issue number1
DOIs
Publication statusPublished - Apr 1 2016
Event8th International Conference on Inertial Fusion Sciences and Applications, IFSA 2013 - Nara, Japan
Duration: Sep 8 2013Sep 13 2013

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filaments
shock
Weibel instability
magnetohydrodynamic flow
high power lasers
upstream
astrophysics
counters
kinetics
cells
magnetic fields
simulation
interactions

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Density filament and helical field line structures in three dimensional Weibel-mediated collisionless shocks. / Moritaka, Toseo; Sakawa, Youichi; Kuramitsu, Yasuhiro; Morita, Taichi; Yamaura, Yuta; Ishikawa, Taishi; Takabe, Hideaki.

In: Journal of Physics: Conference Series, Vol. 688, No. 1, 012072, 01.04.2016.

Research output: Contribution to journalConference article

Moritaka, Toseo ; Sakawa, Youichi ; Kuramitsu, Yasuhiro ; Morita, Taichi ; Yamaura, Yuta ; Ishikawa, Taishi ; Takabe, Hideaki. / Density filament and helical field line structures in three dimensional Weibel-mediated collisionless shocks. In: Journal of Physics: Conference Series. 2016 ; Vol. 688, No. 1.
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AU - Takabe, Hideaki

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