About: Self-discharging of Dust Grains by Ion Field Emission

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://www.mff.cuni.cz/veda/konference/wds/proc/pdf11/WDS11_217_f2_Beranek.pdf
Description	Dust grains can be charged to a positive surface potential by various processes. Grains of irregular shapes can reach high surface field even with moderate potential and the electric field initiated self-discharging of such charged grains can be of a high importance for determination of its equilibrium charge. We have measured the self-discharging current from single positively charged glassy carbon dust grains trapped in the electrodynamic quadrupole under various conditions. The surface electric field was in the range from 1 to 4 kV/μm. Measured increase of the current after implanting Ar ions into the grain indicates that the ionization probability of atoms leaving the grain surface is six orders of magnitude higher compared to the ionization of same atoms of surrounding gas. Dust grains can be charged to a positive surface potential by various processes. Grains of irregular shapes can reach high surface field even with moderate potential and the electric field initiated self-discharging of such charged grains can be of a high importance for determination of its equilibrium charge. We have measured the self-discharging current from single positively charged glassy carbon dust grains trapped in the electrodynamic quadrupole under various conditions. The surface electric field was in the range from 1 to 4 kV/μm. Measured increase of the current after implanting Ar ions into the grain indicates that the ionization probability of atoms leaving the grain surface is six orders of magnitude higher compared to the ionization of same atoms of surrounding gas. (en)
Title	Self-discharging of Dust Grains by Ion Field Emission Self-discharging of Dust Grains by Ion Field Emission (en)
skos:prefLabel	Self-discharging of Dust Grains by Ion Field Emission Self-discharging of Dust Grains by Ion Field Emission (en)
skos:notation	RIV/00216208:11320/11:10109815!RIV12-GA0-11320___
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(GA202/08/0063), S, Z(MSM0021620860)
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Šafránková, Jana Pavlů, Jiří Vaverka, Jakub Němeček, Zdeněk Beránek, Martin Richterová, Ivana
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	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	228720
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/11:10109815
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Ion field emission; Dust (en)
http://linked.open.../riv/klicoveSlovo	Ion field emission Dust
http://linked.open...ontrolniKodProRIV	[B7EC4A41E554]
http://linked.open...v/mistoKonaniAkce	Praha
http://linked.open...i/riv/mistoVydani	Praha
http://linked.open...i/riv/nazevZdroje	WDS'11 Proceedings of Contributed Papers: Part II – Physics of Plasmas and Ionized Media
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	6 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Laboratory simulations of elementary processes in dusty plasmas
http://linked.open...UplatneniVysledku	2011
http://linked.open...iv/tvurceVysledku	Beránek, Martin Němeček, Zdeněk Pavlů, Jiří Richterová, Ivana Vaverka, Jakub Šafránková, Jana
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2011-05-31 (xsd:date)
http://linked.open...n/vavai/riv/zamer	Fyzikální studium objektů a procesů ve sluneční soustavě a v astrofyzikálních systémech
number of pages	9 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Matfyzpress
https://schema.org/isbn	978-80-7378-185-9
http://localhost/t...ganizacniJednotka	11320

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