About: Equilibrium in Low Temperature H3+-dominated Plasma, Application of Cavity Ring-Down Spectroscopy

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://auc.karlin.mff.cuni.cz
Description	We examine establishing of a thermal equilibrium in a H3+-dominated plasma (produced by a microwave discharge ignited in He-Ar-H2 gas mixture) and in its afterglow at temperatures 77-220 K by Cavity Ring-Down Spectroscopy. With respect to the observed population of lowest rotational states of the ground vibrational state of H3+ ion, we conclude that the rotational temperature is well defined and stable. It is equal to the He buffer gas temperature and to the kinetic temperature of the ions. By using para-enriched H2 gas, we achieve high population of para nuclear spin states of H3+ ions in the discharge. This population is not constant in time and evolves towards a steady state (asymptotic) value which is not equal to the thermodynamic equilibrium value for a given temperature. The fact that the value of the steady state para-H3+ fraction does not vary with the concentration of para-enriched H2 indicates that degradation of para-enrichment of H2 in the discharge is negligible. We examine establishing of a thermal equilibrium in a H3+-dominated plasma (produced by a microwave discharge ignited in He-Ar-H2 gas mixture) and in its afterglow at temperatures 77-220 K by Cavity Ring-Down Spectroscopy. With respect to the observed population of lowest rotational states of the ground vibrational state of H3+ ion, we conclude that the rotational temperature is well defined and stable. It is equal to the He buffer gas temperature and to the kinetic temperature of the ions. By using para-enriched H2 gas, we achieve high population of para nuclear spin states of H3+ ions in the discharge. This population is not constant in time and evolves towards a steady state (asymptotic) value which is not equal to the thermodynamic equilibrium value for a given temperature. The fact that the value of the steady state para-H3+ fraction does not vary with the concentration of para-enriched H2 indicates that degradation of para-enrichment of H2 in the discharge is negligible. (en)
Title	Equilibrium in Low Temperature H3+-dominated Plasma, Application of Cavity Ring-Down Spectroscopy Equilibrium in Low Temperature H3+-dominated Plasma, Application of Cavity Ring-Down Spectroscopy (en)
skos:prefLabel	Equilibrium in Low Temperature H3+-dominated Plasma, Application of Cavity Ring-Down Spectroscopy Equilibrium in Low Temperature H3+-dominated Plasma, Application of Cavity Ring-Down Spectroscopy (en)
skos:notation	RIV/00216208:11320/12:10132621!RIV13-GA0-11320___
http://linked.open...avai/predkladatel	Matematicko-fyzikální fakulta
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(GA202/07/0495), P(GA202/09/0642), P(GA205/09/1183), P(GD202/08/H057), P(OC10046), S, Z(MSM0021620834)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Rubovič, Peter Plašil, Radek Dohnal, Petr Glosík, Juraj Varju, Jozef Hejduk, Michal Opanasiuk, Sergii
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	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	134639
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/12:10132621
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	cavity ring-down spectroscopy; H3+ plasma (en)
http://linked.open.../riv/klicoveSlovo	H3+ plasma cavity ring-down spectroscopy
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[37421C2A07DF]
http://linked.open...i/riv/nazevZdroje	Acta Universitatis Carolinae - Mathematica et Physica
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	7 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Interaction of cold electrons with molecules and ions: Cryogenic magnetic electron trap Recombination in cryogenic plasma Laboratory astrophysics: Formation and recombination of astrophysically relevant ions. Modern trends in plasma physics Astrochemistry
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	53
http://linked.open...iv/tvurceVysledku	Dohnal, Petr Glosík, Juraj Opanasiuk, Sergii Plašil, Radek Rubovič, Peter Hejduk, Michal Varju, Jozef
http://linked.open...n/vavai/riv/zamer	Condensed Matter Physics – New Materials and Technologies
issn	0001-7140
number of pages	8 (xsd:int)
http://localhost/t...ganizacniJednotka	11320
is http://linked.open...avai/riv/vysledek of	Equilibrium in Low Temperature H3+-dominated Plasma, Application of Cavity Ring-Down Spectroscopy

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