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Formation of electrostatic structures by wakefield acceleration in ultrarelativistic plasma flows: Electron acceleration to cosmic ray energies
Ruhr-University Bochum.ORCID iD: 0000-0003-4055-0552
Institute of Theoretical Physics IV Ruhr-University Bochum, Germany.
Institute of Theoretical Physics IV Ruhr-University Bochum, Germany.
2006 (English)In: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 13, no 6, 062905-1-062905-8 p.Article in journal (Refereed) Published
Abstract [en]

The ever increasing performance of supercomputers is now enabling kinetic simulations of extreme astrophysical and laser produced plasmas. Three-dimensional particle-in-cell (PIC) simulations of relativistic shocks have revealed highly filamented spatial structures and their ability to accelerate particles to ultrarelativistic speeds. However, these PIC simulations have not yet revealed mechanisms that could produce particles with tera-electron volt energies and beyond. In this work, PIC simulations in one dimension (1D) of the foreshock region of an internal shock in a gamma ray burst are performed to address this issue. The large spatiotemporal range accessible to a 1D simulation enables the self-consistent evolution of proton phase space structures that can accelerate particles to giga-electron volt energies in the jet frame of reference, and to tens of tera-electron volt in the Earth's frame of reference. One potential source of ultrahigh energy cosmic rays may thus be the thermalization of relativistically moving plasma.

Place, publisher, year, edition, pages
2006. Vol. 13, no 6, 062905-1-062905-8 p.
Keyword [en]
plasma physics
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-35700DOI: 10.1063/1.2212393Local ID: 28192OAI: oai:DiVA.org:liu-35700DiVA: diva2:256548
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2017-12-13

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Dieckmann, Mark E

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