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Statements

Subject Item
n2:RIV%2F60461373%3A22340%2F13%3A43895772%21RIV14-GA0-22340___
rdf:type
skos:Concept n15:Vysledek
dcterms:description
We investigate the electron ionization of clusters generated in mixed Ar-water expansions. The electron energy dependent ion yields reveal the neutral cluster composition and structure: water clusters fully covered with the Ar solvation shell are formed under certain expansion conditions. The argon atoms shield the embedded (H2O) n clusters resulting in the ionization threshold above 15 eV for all fragments. The argon atoms also mediate more complex reactions in the clusters: e.g., the charge transfer between Ar+ and water occurs above the threshold; at higher electron energies above 28 eV, an excitonic transfer process between Ar+* and water opens leading to new products Ar n H+ and (H2O) n H+. On the other hand, the excitonic transfer from the neutral Ar* state at lower energies is not observed although this resonant process was demonstrated previously in a photoionization experiment. Doubly charged fragments (H2O) n H2+2 and (H2O)2+n ions are observed and Intermolecular Coulomb decay (ICD) processes are invoked to explain their thresholds. The Coulomb explosion of the doubly charged cluster formed within the ICD process is prevented by the stabilization effect of the argon solvent. We investigate the electron ionization of clusters generated in mixed Ar-water expansions. The electron energy dependent ion yields reveal the neutral cluster composition and structure: water clusters fully covered with the Ar solvation shell are formed under certain expansion conditions. The argon atoms shield the embedded (H2O) n clusters resulting in the ionization threshold above 15 eV for all fragments. The argon atoms also mediate more complex reactions in the clusters: e.g., the charge transfer between Ar+ and water occurs above the threshold; at higher electron energies above 28 eV, an excitonic transfer process between Ar+* and water opens leading to new products Ar n H+ and (H2O) n H+. On the other hand, the excitonic transfer from the neutral Ar* state at lower energies is not observed although this resonant process was demonstrated previously in a photoionization experiment. Doubly charged fragments (H2O) n H2+2 and (H2O)2+n ions are observed and Intermolecular Coulomb decay (ICD) processes are invoked to explain their thresholds. The Coulomb explosion of the doubly charged cluster formed within the ICD process is prevented by the stabilization effect of the argon solvent.
dcterms:title
Energy and charge transfer in ionized argon coated water clusters Energy and charge transfer in ionized argon coated water clusters
skos:prefLabel
Energy and charge transfer in ionized argon coated water clusters Energy and charge transfer in ionized argon coated water clusters
skos:notation
RIV/60461373:22340/13:43895772!RIV14-GA0-22340___
n15:predkladatel
n16:orjk%3A22340
n3:aktivita
n7:I n7:P
n3:aktivity
I, P(GAP208/11/0161)
n3:cisloPeriodika
21
n3:dodaniDat
n8:2014
n3:domaciTvurceVysledku
n4:1781073
n3:druhVysledku
n13:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n12:predkladatel
n3:idSjednocenehoVysledku
72859
n3:idVysledku
RIV/60461373:22340/13:43895772
n3:jazykVysledku
n20:eng
n3:klicovaSlova
FRAGMENTATION; HETEROCLUSTERS; PHOTOIONIZATION; PHOTODISSOCIATION; IONS; STATES; SIZE; (HBR)(N) CLUSTERS; PENNING IONIZATION; ELECTRON-IMPACT IONIZATION
n3:klicoveSlovo
n10:PENNING%20IONIZATION n10:PHOTODISSOCIATION n10:HETEROCLUSTERS n10:IONS n10:SIZE n10:STATES n10:ELECTRON-IMPACT%20IONIZATION n10:FRAGMENTATION n10:%28HBR%29%28N%29%20CLUSTERS n10:PHOTOIONIZATION
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[4F2A13DA9A80]
n3:nazevZdroje
Journal of Chemical Physics
n3:obor
n11:CF
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
4
n3:projekt
n18:GAP208%2F11%2F0161
n3:rokUplatneniVysledku
n8:2013
n3:svazekPeriodika
139
n3:tvurceVysledku
Lengyel, Jozef Fárník, Michal Kočišek, Jaroslav Slavíček, Petr
n3:wos
000328636400026
s:issn
0021-9606
s:numberOfPages
7
n19:doi
10.1063/1.4834715
n9:organizacniJednotka
22340