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Statements

Subject Item
n2:RIV%2F00216208%3A11320%2F13%3A10191440%21RIV14-GA0-11320___
rdf:type
n7:Vysledek skos:Concept
rdfs:seeAlso
http://dx.doi.org/10.1088/0004-637X/768/1/86
dcterms:description
Using a low-temperature 22-pole ion trap apparatus, detailed measurements for the title reaction have been performed between 10 K and 100 K in order to get some state specific information about this fundamental hydrogen abstraction process. The relative population of the two lowest H-2 rotational states, j = 0 and 1, has been varied systematically. NH+ formation is nearly thermo-neutral; however, to date, the energetics are not known with the accuracy required for low-temperature astrochemistry. Additional complications arise from the fact that, so far, there is no reliable theoretical or experimental information on how the reactivity of the N+ ion depends on its fine-structure (FS) state P-3(ja). Since in the present trapping experiment, thermalization of the initially hot FS population competes with hydrogen abstraction, the evaluation of the decay of N+ ions over long storage times and at various He and H-2 gas densities provides information on these processes. First assuming strict adiabatic behavior, a set of state specific rate coefficients is derived from the measured thermal rate coefficients. In addition, by recording the disappearance of the N+ ions over several orders of magnitude, information on nonadiabatic transitions is extracted including FS-changing collisions. Using a low-temperature 22-pole ion trap apparatus, detailed measurements for the title reaction have been performed between 10 K and 100 K in order to get some state specific information about this fundamental hydrogen abstraction process. The relative population of the two lowest H-2 rotational states, j = 0 and 1, has been varied systematically. NH+ formation is nearly thermo-neutral; however, to date, the energetics are not known with the accuracy required for low-temperature astrochemistry. Additional complications arise from the fact that, so far, there is no reliable theoretical or experimental information on how the reactivity of the N+ ion depends on its fine-structure (FS) state P-3(ja). Since in the present trapping experiment, thermalization of the initially hot FS population competes with hydrogen abstraction, the evaluation of the decay of N+ ions over long storage times and at various He and H-2 gas densities provides information on these processes. First assuming strict adiabatic behavior, a set of state specific rate coefficients is derived from the measured thermal rate coefficients. In addition, by recording the disappearance of the N+ ions over several orders of magnitude, information on nonadiabatic transitions is extracted including FS-changing collisions.
dcterms:title
LOW-TEMPERATURE ION TRAP STUDIES OF N+(P-3(ja)) + H-2(j) -> NH+ + H LOW-TEMPERATURE ION TRAP STUDIES OF N+(P-3(ja)) + H-2(j) -> NH+ + H
skos:prefLabel
LOW-TEMPERATURE ION TRAP STUDIES OF N+(P-3(ja)) + H-2(j) -> NH+ + H LOW-TEMPERATURE ION TRAP STUDIES OF N+(P-3(ja)) + H-2(j) -> NH+ + H
skos:notation
RIV/00216208:11320/13:10191440!RIV14-GA0-11320___
n7:predkladatel
n8:orjk%3A11320
n3:aktivita
n14:I n14:S n14:P
n3:aktivity
I, P(GA205/09/1183), P(GAP209/12/0233), P(OC10046), S
n3:cisloPeriodika
1
n3:dodaniDat
n20:2014
n3:domaciTvurceVysledku
n6:9667334 n6:4104544 Mulin, Dmytro n6:8133824 Gerlich, Dieter n6:2913623
n3:druhVysledku
n17:J
n3:duvernostUdaju
n19:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
85511
n3:idVysledku
RIV/00216208:11320/13:10191440
n3:jazykVysledku
n13:eng
n3:klicovaSlova
molecular processes; ISM: abundances; astrochemistry
n3:klicoveSlovo
n11:astrochemistry n11:molecular%20processes n11:ISM%3A%20abundances
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[1E3B239DA4C2]
n3:nazevZdroje
Astrophysical Journal
n3:obor
n9:BL
n3:pocetDomacichTvurcuVysledku
6
n3:pocetTvurcuVysledku
6
n3:projekt
n4:GA205%2F09%2F1183 n4:OC10046 n4:GAP209%2F12%2F0233
n3:rokUplatneniVysledku
n20:2013
n3:svazekPeriodika
768
n3:tvurceVysledku
Plašil, Radek Glosík, Juraj Hejduk, Michal Mulin, Dmytro Zymak, Illia Gerlich, Dieter
n3:wos
000317960500086
s:issn
0004-637X
s:numberOfPages
8
n10:doi
10.1088/0004-637X/768/1/86
n12:organizacniJednotka
11320