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Physics of Plasmas / Volume 17 / Issue 11 / LETTERS

Phys. Plasmas 17, 110701 (2010); http://dx.doi.org/10.1063/1.3493627 (4 pages)

Magnetic vortex growth in the transition layer of a mildly relativistic plasma shock

G. C. Murphy, M. E. Dieckmann, and L. O’C. Drury

Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, Dublin 2, Ireland

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(Received 9 April 2010; accepted 7 September 2010; published online 2 November 2010)

A two-dimensional particle simulation models the collision of two electron-ion plasma clouds along a quasiparallel magnetic field. The collision speed is 0.9c and the density ratio, 10. A current sheet forms at the front of the dense cloud, in which the electrons and the magnetic field reach energy equipartition with the ions. A structure composed of a solenoidal and a toroidal magnetic field grows in this sheet. It resembles the cross-section of the torus of a spheromak, which may provide the coherent magnetic fields in gamma-ray burst jets needed for their prompt emissions.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

plasma collision processes, plasma density, plasma jets, plasma magnetohydrodynamics, plasma shock waves, plasma simulation, plasma toroidal confinement, relativistic plasmas

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3493627

PUBLICATION DATA

ISSN

1070-664X (print)  
1089-7674 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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    References

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