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Shock creation and particle acceleration driven by plasma expansion into a rarefied medium
Centre for Plasma Physics, The Queen’s University of Belfast, Belfast BT7 1NN, United Kingdom .
Linköping University, Department of Science and Technology, Visual Information Technology and Applications (VITA). Linköping University, The Institute of Technology.ORCID iD: 0000-0003-4055-0552
Centre for Plasma Physics, The Queen’s University of Belfast, Belfast BT7 1NN, United Kingdom .
Centre for Plasma Physics, The Queen’s University of Belfast, Belfast BT7 1NN, United Kingdom .
2010 (English)In: Physics of Plasmas, ISSN 1070-664X, Vol. 17, no 8, 082305- p.Article in journal (Refereed) Published
Abstract [en]

The expansion of a dense plasma through a more rarefied ionized medium is a phenomenon of interest in various physics environments ranging from astrophysics to high energy density laser-matter laboratory experiments. Here this situation is modeled via a one-dimensional particle-in-cell simulation; a jump in the plasma density of a factor of 100 is introduced in the middle of an otherwise equally dense electron-proton plasma with an uniform proton and electron temperature of 10 eV and 1 keV, respectively. The diffusion of the dense plasma, through the rarefied one, triggers the onset of different nonlinear phenomena such as a strong ion-acoustic shock wave and a rarefaction wave. Secondary structures are detected, some of which are driven by a drift instability of the rarefaction wave. Efficient proton acceleration occurs ahead of the shock, bringing the maximum proton velocity up to 60 times the initial ion thermal speed.

Place, publisher, year, edition, pages
American Institute of Physics , 2010. Vol. 17, no 8, 082305- p.
Keyword [en]
laser plasma, PIC simulation, collisionless shock, plasma density, plasma shock waves, plasma simulation
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:liu:diva-58672DOI: 10.1063/1.3469762ISI: 000281906300017OAI: oai:DiVA.org:liu-58672DiVA: diva2:344753
Note
Original Publication: Gianluca Sarri, Mark Eric Dieckmann, Ioannis Kourakis and Marco Borghesi, Shock creation and particle acceleration driven by plasma expansion into a rarefied medium, 2010, Physics of Plasmas, (17), 8, 082305. http://dx.doi.org/10.1063/1.3469762 Copyright: American Institute of Physics http://www.aip.org/ Available from: 2010-08-20 Created: 2010-08-20 Last updated: 2017-11-03

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Dieckmann, Mark Eric

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