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Statements

Subject Item
n2:RIV%2F00216208%3A11320%2F12%3A10132621%21RIV13-GA0-11320___
rdf:type
skos:Concept n15:Vysledek
rdfs:seeAlso
http://auc.karlin.mff.cuni.cz
dcterms: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.
dcterms: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
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
skos:notation
RIV/00216208:11320/12:10132621!RIV13-GA0-11320___
n15:predkladatel
n17:orjk%3A11320
n3:aktivita
n16:Z n16:S n16:P
n3:aktivity
P(GA202/07/0495), P(GA202/09/0642), P(GA205/09/1183), P(GD202/08/H057), P(OC10046), S, Z(MSM0021620834)
n3:cisloPeriodika
1
n3:dodaniDat
n18:2013
n3:domaciTvurceVysledku
n5:8133824 n5:3847632 n5:2913623 Opanasiuk, Sergii n5:6787703 n5:9667334 n5:8991596
n3:druhVysledku
n4:J
n3:duvernostUdaju
n13:S
n3:entitaPredkladatele
n21:predkladatel
n3:idSjednocenehoVysledku
134639
n3:idVysledku
RIV/00216208:11320/12:10132621
n3:jazykVysledku
n19:eng
n3:klicovaSlova
cavity ring-down spectroscopy; H3+ plasma
n3:klicoveSlovo
n7:H3%2B%20plasma n7:cavity%20ring-down%20spectroscopy
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[37421C2A07DF]
n3:nazevZdroje
Acta Universitatis Carolinae - Mathematica et Physica
n3:obor
n11:BL
n3:pocetDomacichTvurcuVysledku
7
n3:pocetTvurcuVysledku
7
n3:projekt
n10:GA205%2F09%2F1183 n10:GA202%2F07%2F0495 n10:GD202%2F08%2FH057 n10:OC10046 n10:GA202%2F09%2F0642
n3:rokUplatneniVysledku
n18:2012
n3:svazekPeriodika
53
n3:tvurceVysledku
Plašil, Radek Opanasiuk, Sergii Rubovič, Peter Dohnal, Petr Varju, Jozef Glosík, Juraj Hejduk, Michal
n3:zamer
n8:MSM0021620834
s:issn
0001-7140
s:numberOfPages
8
n14:organizacniJednotka
11320