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Statements

Subject Item
n2:RIV%2F61389021%3A_____%2F10%3A00352829%21RIV11-AV0-61389021
rdf:type
skos:Concept n18:Vysledek
dcterms:description
We simulate behavior of plasma impurities in turbulent potential in tokamak scrape-off layer. Assuming low density of impurities we use test particle approach to investigate movement of individual particles in time evolving potential of isolated structure generated by interchange instability. Behavior of the plasma is modeled using reduced fluid model. We compare behavior of test particles under guiding center drift approximation with full-orbit 2D Hamiltonian equations of motion. While we find flow of particles governed purely by ExB drift to be incompressible, including also polarization drift results in compressibility of the flow. Particles traced along their full orbits exhibit the compressibility as well, however, larger in space and different in its amplitude. We therefore conclude that neglecting finite Larmor radius and assuming dynamics based on drift approximation may introduce significant error into simulations of impurity behavior in tokamak SOL. We simulate behavior of plasma impurities in turbulent potential in tokamak scrape-off layer. Assuming low density of impurities we use test particle approach to investigate movement of individual particles in time evolving potential of isolated structure generated by interchange instability. Behavior of the plasma is modeled using reduced fluid model. We compare behavior of test particles under guiding center drift approximation with full-orbit 2D Hamiltonian equations of motion. While we find flow of particles governed purely by ExB drift to be incompressible, including also polarization drift results in compressibility of the flow. Particles traced along their full orbits exhibit the compressibility as well, however, larger in space and different in its amplitude. We therefore conclude that neglecting finite Larmor radius and assuming dynamics based on drift approximation may introduce significant error into simulations of impurity behavior in tokamak SOL.
dcterms:title
Impurity Dynamics in Turbulent Plasma in Tokamak Scrape-off Layer Impurity Dynamics in Turbulent Plasma in Tokamak Scrape-off Layer
skos:prefLabel
Impurity Dynamics in Turbulent Plasma in Tokamak Scrape-off Layer Impurity Dynamics in Turbulent Plasma in Tokamak Scrape-off Layer
skos:notation
RIV/61389021:_____/10:00352829!RIV11-AV0-61389021
n3:aktivita
n12:S n12:Z
n3:aktivity
S, Z(AV0Z20430508)
n3:dodaniDat
n17:2011
n3:domaciTvurceVysledku
n11:3869393
n3:druhVysledku
n9:D
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
263233
n3:idVysledku
RIV/61389021:_____/10:00352829
n3:jazykVysledku
n4:eng
n3:klicovaSlova
plasma turbulence; plasma impurities; impurity transport
n3:klicoveSlovo
n5:plasma%20impurities n5:plasma%20turbulence n5:impurity%20transport
n3:kontrolniKodProRIV
[17245DA3D1B5]
n3:mistoKonaniAkce
Prague
n3:mistoVydani
Prague
n3:nazevZdroje
Proceedings of the 19th Annual Conference of Doctoral Students - WDS 2010
n3:obor
n14:BL
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
2
n3:rokUplatneniVysledku
n17:2010
n3:tvurceVysledku
Seidl, J. Krlín, Ladislav
n3:typAkce
n7:WRD
n3:zahajeniAkce
2010-06-01+02:00
n3:zamer
n13:AV0Z20430508
s:numberOfPages
6
n19:hasPublisher
MATFYZPRESS
n20:isbn
978-80-7378-141-5