About: ION TRAP STUDIES OF H- + H -> H-2 + e(-) BETWEEN 10 AND 135 K

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Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1088/0004-637X/749/1/22
Description	Thermal rate coefficients for forming H-2 via associative detachment in H- + H collisions were determined using the combination of a 22-pole ion trap (22PT) with a skimmed effusive beam of atomic hydrogen penetrating the ion cloud. The temperature of both reactants have been varied independently (ion trap: T-22PT = 10-150 K, neutral beam accommodator T-ACC = 10, 50, 120 K). Using various combinations, the temperature range between 10 and 135 K has been accessed for the first time experimentally. The effective number density of H (typically some 10(8) cm(-3)) is determined in situ via chemical probing with CO2+ ions. With decreasing temperature, the measured thermal rate coefficients decrease slowly from 5.5 x 10(-9) cm(3) s(-1) at 135 K to 4.1 x 10(-9) cm(3) s(-1) at 10 K. The relative error is 10%, while the absolute values may deviate systematically by up to 40%, due to uncertainties in the calibration reaction. Significant improvements of the versatile and sensitive experiment are possible, e. g., by using electron transfer from H to D+ as calibration standard. Thermal rate coefficients for forming H-2 via associative detachment in H- + H collisions were determined using the combination of a 22-pole ion trap (22PT) with a skimmed effusive beam of atomic hydrogen penetrating the ion cloud. The temperature of both reactants have been varied independently (ion trap: T-22PT = 10-150 K, neutral beam accommodator T-ACC = 10, 50, 120 K). Using various combinations, the temperature range between 10 and 135 K has been accessed for the first time experimentally. The effective number density of H (typically some 10(8) cm(-3)) is determined in situ via chemical probing with CO2+ ions. With decreasing temperature, the measured thermal rate coefficients decrease slowly from 5.5 x 10(-9) cm(3) s(-1) at 135 K to 4.1 x 10(-9) cm(3) s(-1) at 10 K. The relative error is 10%, while the absolute values may deviate systematically by up to 40%, due to uncertainties in the calibration reaction. Significant improvements of the versatile and sensitive experiment are possible, e. g., by using electron transfer from H to D+ as calibration standard. (en)
Title	ION TRAP STUDIES OF H- + H -> H-2 + e(-) BETWEEN 10 AND 135 K ION TRAP STUDIES OF H- + H -> H-2 + e(-) BETWEEN 10 AND 135 K (en)
skos:prefLabel	ION TRAP STUDIES OF H- + H -> H-2 + e(-) BETWEEN 10 AND 135 K ION TRAP STUDIES OF H- + H -> H-2 + e(-) BETWEEN 10 AND 135 K (en)
skos:notation	RIV/00216208:11320/12:10130596!RIV13-GA0-11320___
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(GAP209/12/0233), P(OC10046), S, Z(MSM0021620834)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Plašil, Radek Roučka, Štěpán Glosík, Juraj Jusko, Pavol Gerlich, Dieter Zymak, Illia
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	142990
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/12:10130596
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	molecular processes; methods: laboratory; early Universe; atomic processes; astrochemistry (en)
http://linked.open.../riv/klicoveSlovo	astrochemistry early Universe methods: laboratory molecular processes atomic processes
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[0BD0B673E19A]
http://linked.open...i/riv/nazevZdroje	Astrophysical Journal
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	Experimental astrochemistry - reactions of anions 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. Astrochemistry
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	749
http://linked.open...iv/tvurceVysledku	Glosík, Juraj Gerlich, Dieter Jusko, Pavol Plašil, Radek Roučka, Štěpán Zymak, Illia
http://linked.open...ain/vavai/riv/wos	000302175500022
http://linked.open...n/vavai/riv/zamer	Condensed Matter Physics – New Materials and Technologies
issn	0004-637X
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1088/0004-637X/749/1/22
http://localhost/t...ganizacniJednotka	11320

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