The Weibel instability in a circular rarefaction wave

Dieckmann, Mark EricLinköpings universitet,Medie- och Informationsteknik,Tekniska högskolan,Scientific Visualization (författare)

Instabilities behind the front of a cylindrically expanding plasma have been investigated experimentally and with a particle-in-cell simulation. Tubelike filamentary structures form behind the front of a plasma created by irradiating wire targets with a ps-duration and intense ( 1019 W cm-2) laser pulse. These filaments exhibit coherent magnetic fields with a remarkable stability ( 103 / wp: plasma frequency). PIC simulations indicate that an instability driven by a thermal anisotropy of the electron population is the cause. This instability requires a plasma density gradient and hot electrons. It can thus contribute to the generation of strongsustained magnetic fields in astrophysical jets.

Quinn, KevinQueen's University Belfast, UK,Centre for Plasma Physics (författare)
Sarri, GianlucaQueen's University Belfast, UK,Centre for Plasma Physics (författare)
Romagnani, LorenzoLULI, Ecole Polytechnique, CNRS, CEA, UPMC, Palaiseau, France (författare)
Murphy, Gareth CharlesDublin Institute for Advanced Studies, Dublin, Ireland (författare)
Kourakis, IoannisQueen's University Belfast, UK,Centre for Plasma Physics (författare)
Macchi, AndreaCNR, Istituto Nazionale di Ottica, Pisa, Italy (författare)
Fuchs, JulienLULI, Ecole Polytechnique, CNRS, CEA, UPMC, Palaiseau, France (författare)
Willi, OswaldUniv. Düsseldorf, Inst. Laser & Plasmaphys., Düsseldorf, Germany (författare)
Borghesi, MarcoQueen's University Belfast,Centre for Plasma Physics (författare)
Linköpings universitetMedie- och Informationsteknik (creator_code:org_t)

Ingår i:Proceedings of the 39th European Physical Society Conference & 16th Int. Congress on Plasma Physics, s. P1.176-1-P1.176-4

Av författaren/redakt...: Dieckmann, Mark ...; Quinn, Kevin; Sarri, Gianluca; Romagnani, Loren ...; Murphy, Gareth C ...; Kourakis, Ioanni ...; visa fler...; Macchi, Andrea; Fuchs, Julien; Willi, Oswald; Borghesi, Marco; visa färre...

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