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Electrostatic shock waves in the laboratory and astrophysics: similarities and differences
Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-4055-0552
Queens University of Belfast, North Ireland.
Queens University of Belfast, North Ireland.
Ecole Polytech, France.
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2018 (English)In: Plasma Physics and Controlled Fusion, ISSN 0741-3335, E-ISSN 1361-6587, Vol. 60, no 1, 014014Article in journal (Refereed) Published
Abstract [en]

Contemporary lasers allow us to create shocks in the laboratory that propagate at a speed that matches that of energetic astrophysical shocks like those that ensheath supernova blast shells. The rapid growth time of the shocks and the spatio-temporal resolution, with which they can be sampled, allow us to identify the processes that are involved in their formation and evolution. Some laser-generated unmagnetized shocks are mediated by collective electrostatic forces and effects caused by binary collisions between particles can be neglected. Hydrodynamic models, which are valid for many large-scale astrophysical shocks, assume that collisions enforce a local thermodynamic equilibrium in the medium; laser-generated shocks are thus not always representative for astrophysical shocks. Laboratory studies of shocks can improve the understanding of their astrophysical counterparts if we can identify processes that affect electrostatic shocks and hydrodynamic shocks alike. An example is the nonlinear thin-shell instability (NTSI). We show that the NTSI destabilises collisionless and collisional shocks by the same physical mechanism.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2018. Vol. 60, no 1, 014014
Keyword [en]
particle-in-cell simulation; thin-shell instability; electrostatic shock; unmagnetized plasma
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Identifiers
URN: urn:nbn:se:liu:diva-142962DOI: 10.1088/1361-6587/aa8c8fISI: 000413836000001OAI: oai:DiVA.org:liu-142962DiVA: diva2:1156509
Note

Funding Agencies|visiting fellowship of CRAL; EPSRC [EP/P010059/1, EP/K022415/1, EP/N027175/1]; Spanish Ministerio de Educacion [ENE2016-75703-R]; Grand Equipement National de Calcul Intensif (GENCI) [x2014046960]

Available from: 2017-11-13 Created: 2017-11-13 Last updated: 2017-11-14

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The full text will be freely available from 2018-10-27 11:23
Available from 2018-10-27 11:23

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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