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Two-dimensional particle-in-cell simulation of the expansion of a plasma into a rarefied medium
Queen's University of Belfast, UK.
Dublin Institute for Advanced Studies, Dublin, Ireland.
Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
ETSI Ind, University of Castilla-LaMancha, Spain.
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2011 (English)In: New Journal of Physics, ISSN 1367-2630, Vol. 13, no 7, 073023-1-073023-23 p.Article in journal (Refereed) Published
Abstract [en]

The expansion of a dense plasma through a more rarefied ionized medium has been studied by means of two-dimensional particle-in-cell simulations. The initial conditions involve a density jump by a factor of 100, located in the middle of an otherwise equally dense electron-proton plasma with uniform proton and electron temperatures of 10 eV and 1keV, respectively. Simulations show the creation of a purely electrostatic collisionless shock together with an ion-acoustic soliton tied to its downstream region. The shock front is seen to evolve in filamentary structures consistently with the onset of the ion-ion instability. Meanwhile, an un-magnetized drift instability is triggered in the core part of the dense plasma. Such results explain recent laser-plasma experiments, carried out in similar conditions, and are of intrinsic relevance to non-relativistic shock scenarios in the solar and astrophysical systems.

Place, publisher, year, edition, pages
IOP Publishing , 2011. Vol. 13, no 7, 073023-1-073023-23 p.
Keyword [en]
laser plasmas, pic simulations, electrostatic shock
National Category
Fusion, Plasma and Space Physics
URN: urn:nbn:se:liu:diva-69681DOI: 10.1088/1367-2630/13/7/073023ISI: 000293885900002OAI: diva2:431084
Swedish Research Council
Available from: 2011-07-14 Created: 2011-07-14 Last updated: 2015-09-22

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