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Photodissociation of hydrogen halide molecules on free ice nanoparticles

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F07%3A00092236" target="_blank" >RIV/61388955:_____/07:00092236 - isvavai.cz</a>

  • Alternative codes found

    RIV/60461373:22340/07:00018110

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Photodissociation of hydrogen halide molecules on free ice nanoparticles

  • Original language description

    Photodissociation of water clusters doped with HX(X=Br,Cl), molecules has been studied in a molecular beam experiment. The HX(H2O)(n) clusters are dissociated with 193 nm laser pulses, and the H fragments are ionized at 243.07 nm and their time-of-flightdistributions are measured. Experiments with deuterated species DBr(H2O)(n) and HBr(D2O)(n) suggest that the photodissociation signal originates from the presence of the HX molecule on the water cluster, but does not come directly from a photolysis of the HX molecule. The H fragment is proposed to originate from the hydronium molecule H3O. Possible mechanisms of the H3O production are discussed. Experimental evidence suggests that acidic dissociation takes place in the cluster, but the H3O+ ion remainsrather immobile.

  • Czech name

    Fotodisociace molekul halogenvodíků na volných nanočásticích ledu

  • Czech description

    Byla studována fotodisociace vodních klastrů dopovaných molekulami HX (X=Br, Cl). HX(H2O)n klastry byly disociovány při 193 nm a vzniklé H-fragmenty ionizovány při 243,07 nm a jejich TOF rozdělení bylo měřeno. Experimenty s deuterovanými klastry DBr(H2O)n a HBr(D2O)n ukazují, že fotodisociační signál pochází z přítomnosti molekul HX na klastrech ale nikoliv přímo z fotolýzy HX molekuly. H fragmenty pocházejí z molekuly hydronia H3O. Možné mechanismy vzniku H3O jsou diskutovány. Experimentální evidence ukazuje, že dochází k acidické disociaci v klastru ale vzniklý H3O+ iont je značně imobilní.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    CF - Physical chemistry and theoretical chemistry

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2007

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Chemical Physics

  • ISSN

    0021-9606

  • e-ISSN

  • Volume of the periodical

    126

  • Issue of the periodical within the volume

    7

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    4

  • Pages from-to

  • UT code for WoS article

  • EID of the result in the Scopus database