About: A kinetic model of retarding field analyser measurements in strongly magnetized, flowing, collisional plasmas

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About: A kinetic model of retarding field analyser measurements in strongly magnetized, flowing, collisional plasmas Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Interpretation of retarding field analyser (RFA) measurements in flowing tokamak scrape- off layer plasmas requires a model of the perturbation introduced by the wake, or presheath, of the instrument. We extend a collisionless kinetic Mach probe theory to include a simple model of ion-ion collisions. Collisions lead to significant modifications in the downstream presheath. Depending on the ion-to-electron temperature ratio, flow speed and collisionality, the measurement obtained by averaging the apparent temperatures on each side of a bi-directional RFA is predicted to overestimate the unperturbed ion temperature, but with errors not exceeding 50% most of the time. The error increases with Mach number, and decreases with the ion-to-electron temperature ratio. Interpretation of retarding field analyser (RFA) measurements in flowing tokamak scrape- off layer plasmas requires a model of the perturbation introduced by the wake, or presheath, of the instrument. We extend a collisionless kinetic Mach probe theory to include a simple model of ion-ion collisions. Collisions lead to significant modifications in the downstream presheath. Depending on the ion-to-electron temperature ratio, flow speed and collisionality, the measurement obtained by averaging the apparent temperatures on each side of a bi-directional RFA is predicted to overestimate the unperturbed ion temperature, but with errors not exceeding 50% most of the time. The error increases with Mach number, and decreases with the ion-to-electron temperature ratio. (en)
Title	A kinetic model of retarding field analyser measurements in strongly magnetized, flowing, collisional plasmas A kinetic model of retarding field analyser measurements in strongly magnetized, flowing, collisional plasmas (en)
skos:prefLabel	A kinetic model of retarding field analyser measurements in strongly magnetized, flowing, collisional plasmas A kinetic model of retarding field analyser measurements in strongly magnetized, flowing, collisional plasmas (en)
skos:notation	RIV/61389021:_____/13:00421661!RIV14-MSM-61389021
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(7G10072)
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Fuchs, Vladimír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
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	58670
http://linked.open...ai/riv/idVysledku	RIV/61389021:_____/13:00421661
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	plasma; collisions; magnetic field; retarding field analyzer (en)
http://linked.open.../riv/klicoveSlovo	retarding field analyzer magnetic field plasma collisions
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[7F5EA00301E4]
http://linked.open...i/riv/nazevZdroje	Plasma Physics and Controlled Fusion
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Joint carrying out by the Contracting Parties of activities within the thematic area %22fusion energy research%22 of the Seventh Community (Euratom) Framework Program
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	55
http://linked.open...iv/tvurceVysledku	Fuchs, Vladimír Gunn, J. P. Kočan, M.
http://linked.open...ain/vavai/riv/wos	000317739800012
issn	0741-3335
number of pages	11 (xsd:int)
http://bibframe.org/vocab/doi	10.1088/0741-3335/55/4/045012

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