About: Parallel and oblique proton fire hose instabilities in the presence of alpha/proton drift: Hybrid simulations     Goto   Sponge   NotDistinct   Permalink

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  • Paralelní a šikmá hadicové nestabilita jsou studovány v přítomnosti malé populace alfa částic s nenulovou relativní rychlostí vůči protonům. Obě nestability rozptylují protony a alfa částice ve směru kolmém vůči pozaďovému magnetickému poli a zpomaluje relativní rychlost alfa částic vůči protonům; šikmá hadicová nestabilita zvláště efektivně rozptyluje ionty díky svému nekvazilineárnímu vývoji. Lineární Vlasovova teorie předpovídá to, že přítomnost alfa-protonové relativní rychlosti zvyšuje maximální růstové faktory obou hadicových nestabilit obdobným způsobem a že paralelní hadicová nestabila je typicky dominantní nestabilitou. Na druhou stranu, šikmá hadicová nestabilita má často růstový faktor srovnatelný s růstovým faktorem paralelní nestability a hybridní simulace ukazují to, že šikmá hadicová nestabilita může být aktivní, i když paralelní nestabilita je marginálně stabilní. Obě nestability jsou tudíž relevantní v kontextu slunečního větru. (cs)
  • Parallel and oblique proton fire hose instabilities are investigated in the presence of a small abundance of alpha particles with a non zero drift velocity with respect to protons. Both instabilities scatter protons and alpha particles in the perpendicular direction with respect to the ambient magnetic field and decelerate both species with respect each other; especially the oblique fire hose effectively diffuses ions owing to its non quasi-linear evolution. Linear Vlasov theory predicts that the presence of the alpha/proton drift enhances the maximum growth rates of the two instabilities in a similar way and that the parallel fire hose is typically the dominant instability. On the other hand, the oblique fire hose has often the maximum growth rate comparable to that of the parallel one and hybrid simulations show that the oblique instability may be active even when the parallel one is marginally stable.
  • Parallel and oblique proton fire hose instabilities are investigated in the presence of a small abundance of alpha particles with a non zero drift velocity with respect to protons. Both instabilities scatter protons and alpha particles in the perpendicular direction with respect to the ambient magnetic field and decelerate both species with respect each other; especially the oblique fire hose effectively diffuses ions owing to its non quasi-linear evolution. Linear Vlasov theory predicts that the presence of the alpha/proton drift enhances the maximum growth rates of the two instabilities in a similar way and that the parallel fire hose is typically the dominant instability. On the other hand, the oblique fire hose has often the maximum growth rate comparable to that of the parallel one and hybrid simulations show that the oblique instability may be active even when the parallel one is marginally stable. (en)
Title
  • Parallel and oblique proton fire hose instabilities in the presence of alpha/proton drift: Hybrid simulations
  • Parallel and oblique proton fire hose instabilities in the presence of alpha/proton drift: Hybrid simulations (en)
  • Paralelní a šikmá hadicová nestabilita v přítomnosti relativní rychlosti mezi alfa částicemi a protony: Hybridní simulace (cs)
skos:prefLabel
  • Parallel and oblique proton fire hose instabilities in the presence of alpha/proton drift: Hybrid simulations
  • Parallel and oblique proton fire hose instabilities in the presence of alpha/proton drift: Hybrid simulations (en)
  • Paralelní a šikmá hadicová nestabilita v přítomnosti relativní rychlosti mezi alfa částicemi a protony: Hybridní simulace (cs)
skos:notation
  • RIV/68378289:_____/06:00040044!RIV07-AV0-68378289
http://linked.open.../vavai/riv/strany
  • A01107/1;A01107/7
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(IAA3042403), Z(AV0Z30420517)
http://linked.open...iv/cisloPeriodika
  • A1
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 491459
http://linked.open...ai/riv/idVysledku
  • RIV/68378289:_____/06:00040044
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • proton temperature anisotropy; fire hose instability; hybrid simulations (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [6134DA53FDB8]
http://linked.open...i/riv/nazevZdroje
  • Journal of Geophysical Research
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 111
http://linked.open...iv/tvurceVysledku
  • Trávníček, Pavel
  • Hellinger, Petr
http://linked.open...n/vavai/riv/zamer
issn
  • 0148-0227
number of pages
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