About: Impurity Dynamics in Turbulent Plasma in Tokamak Scrape-off Layer

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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. (en)
Title	Impurity Dynamics in Turbulent Plasma in Tokamak Scrape-off Layer Impurity Dynamics in Turbulent Plasma in Tokamak Scrape-off Layer (en)
skos:prefLabel	Impurity Dynamics in Turbulent Plasma in Tokamak Scrape-off Layer Impurity Dynamics in Turbulent Plasma in Tokamak Scrape-off Layer (en)
skos:notation	RIV/61389021:_____/10:00352829!RIV11-AV0-61389021
http://linked.open...avai/riv/aktivita	S Z
http://linked.open...avai/riv/aktivity	S, Z(AV0Z20430508)
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Krlín, Ladislav
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky plazmatu AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	263233
http://linked.open...ai/riv/idVysledku	RIV/61389021:_____/10:00352829
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	plasma turbulence; plasma impurities; impurity transport (en)
http://linked.open.../riv/klicoveSlovo	plasma turbulence plasma impurities impurity transport
http://linked.open...ontrolniKodProRIV	[17245DA3D1B5]
http://linked.open...v/mistoKonaniAkce	Prague
http://linked.open...i/riv/mistoVydani	Prague
http://linked.open...i/riv/nazevZdroje	Proceedings of the 19th Annual Conference of Doctoral Students - WDS 2010
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...UplatneniVysledku	2010
http://linked.open...iv/tvurceVysledku	Krlín, Ladislav Seidl, J.
http://linked.open...vavai/riv/typAkce	WRD - Světová
http://linked.open.../riv/zahajeniAkce	2010-06-01 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Physical and chemical processes in plasmas and theis applications
number of pages	6 (xsd:int)
http://purl.org/ne...btex#hasPublisher	MATFYZPRESS
https://schema.org/isbn	978-80-7378-141-5

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