liu.seSearch for publications in DiVA
Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Magnetic instability in a dilute circular rarefaction wave
Linköpings universitet, Institutionen för teknik och naturvetenskap, Medie- och Informationsteknik. Linköpings universitet, Tekniska högskolan. (Scientific Visualization)ORCID-id: 0000-0003-4055-0552
Queen's University of Belfast, UK.
Queen's University of Belfast, UK.
2012 (engelsk)Inngår i: Physics of Plasmas, ISSN 1070-664X, E-ISSN 1089-7674, Vol. 19, nr 12, s. 122102-1-122102-7Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The growth of magnetic fields in the density gradient of a rarefaction wave has been observed in simulations and in laboratory experiments. The thermal anisotropy of the electrons, which gives rise to the magnetic instability, is maintained by the ambipolar electric field. This simple mechanism could be important for the magnetic field amplification in astrophysical jets or in the interstellar medium ahead of supernova remnant shocks. The acceleration of protons and the generation of a magnetic field by the rarefaction wave, which is fed by an expanding circular plasma cloud, is examined here in form of a 2D particle-in-cell simulation. The core of the plasma cloud is modeled by immobile charges, and the mobile protons form a small ring close to the cloud's surface. The number density of mobile protons is thus less than that of the electrons. The protons of the rarefaction wave are accelerated to 1/10 of the electron thermal speed, and the acceleration results in a thermal anisotropy of the electron distribution in the entire plasma cloud. The instability in the rarefaction wave is outrun by a TM wave, which grows in the dense core distribution, and its magnetic field expands into the rarefaction wave. This expansion drives a secondary TE wave.

sted, utgiver, år, opplag, sider
American Institute of Physics (AIP), 2012. Vol. 19, nr 12, s. 122102-1-122102-7
Emneord [en]
rarefaction wave, laser plasma, pic simulations
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-85949DOI: 10.1063/1.4769128ISI: 000312834000002OAI: oai:DiVA.org:liu-85949DiVA, id: diva2:574190
Forskningsfinansiär
Swedish Research Council, 2010-4063Tilgjengelig fra: 2012-12-04 Laget: 2012-12-04 Sist oppdatert: 2017-12-07

Open Access i DiVA

fulltext(3051 kB)442 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 3051 kBChecksum SHA-512
e1c9324f23ab0a1eb7cec683b79e3b0914e7bc052ed2091f801527386aee229f4bdad66ab31579caa0260f08bdea99aad4e8ebb136049c3182a142f3a81ad3aa
Type fulltextMimetype application/pdf

Andre lenker

Forlagets fulltekst

Personposter BETA

Dieckmann, Mark Eric

Søk i DiVA

Av forfatter/redaktør
Dieckmann, Mark Eric
Av organisasjonen
I samme tidsskrift
Physics of Plasmas

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 442 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 260 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf