About: In-situ Determination of the Population of Nuclear Spin States of H2 Injected to the 22-Pole Trap

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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/pdf12/WDS12_205_f2_Hejduk.pdf
Description	We evaluate a population of ortho nuclear spin states in H2 gas in the 22-pole linear radio-frequency trap using N+ ions as a chemical probe. The rate coefficient of the reaction N+ + H2 -> NH+ + H strongly depends on the nuclear spin states of the H2 molecules at the temperature 11 K. To achieve astrophysically relevant conditions in other our experiments, we convert the normal H2 gas (25% of the molecules in para-states) to H2 gas with a distribution of the nuclear spin states corresponding to the temperatures in prestellar cores (> 99 % in para-states at temperatures 20 K) by a catalytic converter (para-hydrogen generator). Tests by the aforementioned probing reaction show that the abundance of ortho-H2 in such H2 gas is (0:5 0:2)% in the trap. Para-to-ortho back-conversion of H2 gas in the generator's outlet tube was studied and its rate was estimated to lie in the interval (10-4; 10-2)s-1. We evaluate a population of ortho nuclear spin states in H2 gas in the 22-pole linear radio-frequency trap using N+ ions as a chemical probe. The rate coefficient of the reaction N+ + H2 -> NH+ + H strongly depends on the nuclear spin states of the H2 molecules at the temperature 11 K. To achieve astrophysically relevant conditions in other our experiments, we convert the normal H2 gas (25% of the molecules in para-states) to H2 gas with a distribution of the nuclear spin states corresponding to the temperatures in prestellar cores (> 99 % in para-states at temperatures 20 K) by a catalytic converter (para-hydrogen generator). Tests by the aforementioned probing reaction show that the abundance of ortho-H2 in such H2 gas is (0:5 0:2)% in the trap. Para-to-ortho back-conversion of H2 gas in the generator's outlet tube was studied and its rate was estimated to lie in the interval (10-4; 10-2)s-1. (en)
Title	In-situ Determination of the Population of Nuclear Spin States of H2 Injected to the 22-Pole Trap In-situ Determination of the Population of Nuclear Spin States of H2 Injected to the 22-Pole Trap (en)
skos:prefLabel	In-situ Determination of the Population of Nuclear Spin States of H2 Injected to the 22-Pole Trap In-situ Determination of the Population of Nuclear Spin States of H2 Injected to the 22-Pole Trap (en)
skos:notation	RIV/00216208:11320/12:10133141!RIV13-GA0-11320___
http://linked.open...avai/riv/aktivita	P S
http://linked.open...avai/riv/aktivity	P(GA205/09/1183), P(GAP209/12/0233), P(OC10046), S
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Plašil, Radek Glosík, Juraj Hejduk, Michal Gerlich, Dieter Mulin, Dmytro Zymak, Illia
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	142011
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/12:10133141
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	22-pole trap; Nuclear spin states (en)
http://linked.open.../riv/klicoveSlovo	22-pole trap Nuclear spin states
http://linked.open...ontrolniKodProRIV	[E8F75150F5E3]
http://linked.open...v/mistoKonaniAkce	Praha
http://linked.open...i/riv/mistoVydani	Praha
http://linked.open...i/riv/nazevZdroje	WDS'12 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	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Experimental astrochemistry - reactions of anions Laboratory astrophysics: Formation and recombination of astrophysically relevant ions. Astrochemistry
http://linked.open...UplatneniVysledku	2012
http://linked.open...iv/tvurceVysledku	Glosík, Juraj Gerlich, Dieter Mulin, Dmytro Plašil, Radek Zymak, Illia Hejduk, Michal Gartner, S.
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open.../riv/zahajeniAkce	2012-05-29 (xsd:date)
number of pages	7 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Matfyzpress
https://schema.org/isbn	978-80-7378-225-2
http://localhost/t...ganizacniJednotka	11320

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