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One-dimensional thermal pressure-driven expansion of a pair cloud into an electron-proton plasma
Linköpings universitet, Institutionen för teknik och naturvetenskap, Medie- och Informationsteknik. Linköpings universitet, Tekniska fakulteten. (Scientific Visualization)ORCID-id: 0000-0003-4055-0552
Centre for Plasma Physics, Queen's University Belfast, Belfast, UK..
Centre for Plasma Physics, Queen's University Belfast, Belfast, UK..
Université de Lyon, ENS de Lyon, CNRS, Centre de Recherche Astrophysique de Lyon, Lyon, France.
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2018 (engelsk)Inngår i: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 25, nr 5, artikkel-id 064502Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Recently, a filamentation instability was observed when a laser-generated pair cloud interacted with an ambient plasma. The magnetic field it drove was strong enough to magnetize and accelerate the ambient electrons. It is of interest to determine if and how pair cloud-driven instabilities can accelerate ions in the laboratory or in astrophysical plasma. For this purpose, the expansion of a localized pair cloud with the temperature 400 keV into a cooler ambient electron-proton plasma is studied by means of one-dimensional particle-in-cell simulations. The cloud's expansion triggers the formation of electron phase space holes that accelerate some protons to MeV energies. Forthcoming lasers might provide the energy needed to create a cloud that can accelerate protons.

sted, utgiver, år, opplag, sider
Melville, NY, United States: A I P Publishing LLC , 2018. Vol. 25, nr 5, artikkel-id 064502
Emneord [en]
Particle simulation, pair clouds, plasma instability
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-148179DOI: 10.1063/1.5026568ISI: 000437193700131PubMedID: 064502OAI: oai:DiVA.org:liu-148179DiVA, id: diva2:1212116
Merknad

Funding agencies: CRAL (Centre de Recherche Astrophysique de Lyon, CRAL, Universite de Lyon); French National Program of High Energy (PNHE); EPSRC [EP/N027175/1]

Tilgjengelig fra: 2018-06-01 Laget: 2018-06-01 Sist oppdatert: 2018-07-27bibliografisk kontrollert

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