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Statements

Subject Item
n2:RIV%2F00216208%3A11320%2F13%3A10191377%21RIV14-GA0-11320___
rdf:type
n16:Vysledek skos:Concept
rdfs:seeAlso
http://dx.doi.org/10.1021/jp400917v
dcterms:description
Stabilization of H-3(+) collision complexes has been studied at nominal temperatures between 11 and 33 K using a 22-pole radio frequency (rf) ion trap. Apparent binary rate coefficients, k* = k(r) + k(3)[H-2], have been measured for para- and normal-hydrogen at number densities between some 10(11) and 10(14) cm(-3). The state specific rate coefficients extracted for radiative stabilization, k(r)(T-ij), are all below 2 x 10(-16) cm(3) s(-1). There is a slight tendency to decrease with increasing temperature. In contrast to simple expectations, k(r)(11 K-ij) is for j = 0 a factor of 2 smaller than for j = 1. The ternary rate coefficients for p-H-2 show a rather steep T-dependence; however, they are increasing with temperature. The state specific ternary rate coefficients, k(3)(T-ij), measured for j = 0 and derived for j = 1 from measurements with n-H-2, differ by an order of magnitude. Most of these surprising observations are in disagreement with predictions from standard association models, which are based on statistical assumptions and the separation of complex formation and competition between stabilization and decay. Most probably, the unexpected collision dynamics are due to the fact that, at the low translational energies of the present experiment, only a small number of partial waves participate. This should make exact quantum mechanical calculations of k(r) feasible. More complex is three-body stabilization, because it occurs on the H-5(+) potential energy surface. Stabilization of H-3(+) collision complexes has been studied at nominal temperatures between 11 and 33 K using a 22-pole radio frequency (rf) ion trap. Apparent binary rate coefficients, k* = k(r) + k(3)[H-2], have been measured for para- and normal-hydrogen at number densities between some 10(11) and 10(14) cm(-3). The state specific rate coefficients extracted for radiative stabilization, k(r)(T-ij), are all below 2 x 10(-16) cm(3) s(-1). There is a slight tendency to decrease with increasing temperature. In contrast to simple expectations, k(r)(11 K-ij) is for j = 0 a factor of 2 smaller than for j = 1. The ternary rate coefficients for p-H-2 show a rather steep T-dependence; however, they are increasing with temperature. The state specific ternary rate coefficients, k(3)(T-ij), measured for j = 0 and derived for j = 1 from measurements with n-H-2, differ by an order of magnitude. Most of these surprising observations are in disagreement with predictions from standard association models, which are based on statistical assumptions and the separation of complex formation and competition between stabilization and decay. Most probably, the unexpected collision dynamics are due to the fact that, at the low translational energies of the present experiment, only a small number of partial waves participate. This should make exact quantum mechanical calculations of k(r) feasible. More complex is three-body stabilization, because it occurs on the H-5(+) potential energy surface.
dcterms:title
State Specific Stabilization of H+ + H-2(j) Collision Complexes State Specific Stabilization of H+ + H-2(j) Collision Complexes
skos:prefLabel
State Specific Stabilization of H+ + H-2(j) Collision Complexes State Specific Stabilization of H+ + H-2(j) Collision Complexes
skos:notation
RIV/00216208:11320/13:10191377!RIV14-GA0-11320___
n16:predkladatel
n18:orjk%3A11320
n3:aktivita
n5:I n5:S n5:P
n3:aktivity
I, P(GA205/09/1183), P(GAP209/12/0233), S
n3:cisloPeriodika
39
n3:dodaniDat
n14:2014
n3:domaciTvurceVysledku
Gerlich, Dieter n7:4104544 Mulin, Dmytro n7:2913623 n7:8133824 n7:9667334 n7:9707700
n3:druhVysledku
n20:J
n3:duvernostUdaju
n12:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
107708
n3:idVysledku
RIV/00216208:11320/13:10191377
n3:jazykVysledku
n21:eng
n3:klicovaSlova
hydrogen; dynamics; ion; h-3(+); collision complexes
n3:klicoveSlovo
n8:dynamics n8:h-3%28%2B%29 n8:ion n8:hydrogen n8:collision%20complexes
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[714845DBEBEB]
n3:nazevZdroje
Journal of Physical Chemistry A
n3:obor
n15:BL
n3:pocetDomacichTvurcuVysledku
7
n3:pocetTvurcuVysledku
7
n3:projekt
n6:GAP209%2F12%2F0233 n6:GA205%2F09%2F1183
n3:rokUplatneniVysledku
n14:2013
n3:svazekPeriodika
117
n3:tvurceVysledku
Gerlich, Dieter Mulin, Dmytro Glosík, Juraj Zymak, Illia Plašil, Radek Jusko, Pavol Hejduk, Michal
n3:wos
000326300600088
s:issn
1089-5639
s:numberOfPages
8
n17:doi
10.1021/jp400917v
n19:organizacniJednotka
11320