About: Transport of electrons in the tunnel of an ion sensitive probe

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Ion sensitive probes serve to measure the ion temperature in magnetized plasma. The principle of the probe is based on geometrical shielding of the ion collector from plasma electrons. According to the basic theory, when the collector is retracted in the tube, electrons should not be able to reach it and the collector becomes sensitive to ions. However, experimental results show that the electron shielding only works in the case when the potential of the collector is the same as the potential of the inside surface of the tube. This problem is investigated using a full 3D particle-in-cell Cartesian code. A positive potential structure is formed at the entrance of the tube due to the space charge of ions that gyrate inside. This structure produces E B drifts, which push electrons into the shielded space. Simulations revealed that electrons can penetrate inside the geometrical shadow in all studied cases. Ion sensitive probes serve to measure the ion temperature in magnetized plasma. The principle of the probe is based on geometrical shielding of the ion collector from plasma electrons. According to the basic theory, when the collector is retracted in the tube, electrons should not be able to reach it and the collector becomes sensitive to ions. However, experimental results show that the electron shielding only works in the case when the potential of the collector is the same as the potential of the inside surface of the tube. This problem is investigated using a full 3D particle-in-cell Cartesian code. A positive potential structure is formed at the entrance of the tube due to the space charge of ions that gyrate inside. This structure produces E B drifts, which push electrons into the shielded space. Simulations revealed that electrons can penetrate inside the geometrical shadow in all studied cases. (en)
Title	Transport of electrons in the tunnel of an ion sensitive probe Transport of electrons in the tunnel of an ion sensitive probe (en)
skos:prefLabel	Transport of electrons in the tunnel of an ion sensitive probe Transport of electrons in the tunnel of an ion sensitive probe (en)
skos:notation	RIV/61389021:_____/11:00364036!RIV12-AV0-61389021
http://linked.open...avai/predkladatel	Ústav fyziky plazmatu AVČR, v.v.i.
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(7G09042), P(KJB100430901), P(LA08048), S, Z(AV0Z20430508), Z(MSM0021620834)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Komm, Michael Adámek, Jiří Dejarnac, Renaud
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	235912
http://linked.open...ai/riv/idVysledku	RIV/61389021:_____/11:00364036
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Tokamak; plasma; katsumata probe; ExB drift; ion temperature; tunnel; electron (en)
http://linked.open.../riv/klicoveSlovo	ExB drift ion temperature katsumata probe plasma tunnel Tokamak electron
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[8EF88287D2FF]
http://linked.open...i/riv/nazevZdroje	Plasma Physics and Controlled Fusion
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Systematic measurements of the plasma potential and the electron temperature during the L-mode and ELMy H-mode on several large European facilities by using ball-pen probe technique. Joint carrying out by the Contracting Parties of activities within the thematic area %22fusion energy research%22 of the Seventh Community (Euratom) Framework Program Thermonuclear Fusion Research on the joint European tokamak JET in Culham, United Kingdom
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	53
http://linked.open...iv/tvurceVysledku	Adámek, Jiří Dejarnac, Renaud Gunn, J. P. Komm, Michael Pekárek, Z.
http://linked.open...ain/vavai/riv/wos	000285342800019
http://linked.open...n/vavai/riv/zamer	Physical and chemical processes in plasmas and theis applications Condensed Matter Physics – New Materials and Technologies
issn	0741-3335
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1088/0741-3335/53/1/015005
is http://linked.open...avai/riv/vysledek of	Transport of electrons in the tunnel of an ion sensitive probe Transport of electrons in the tunnel of an ion sensitive probe

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