Water photodissociation in free ice nanoparticles at 243 nm and 193 nm

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F08%3A00020213" target="_blank" >RIV/60461373:22340/08:00020213 - isvavai.cz</a>
Alternative codes found
RIV/61388955:_____/08:00316469
Result on the web
—
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
Water photodissociation in free ice nanoparticles at 243 nm and 193 nm
Original language description
The photolysis of (H2O)n nanoparticles of various mean sizes between 85 and 670 has been studied in a molecular beam experiment. At the dissociation wavelength 243 nm (5.10 eV), a two-photon absorption leads to H-atom production. The measured kinetic energy distributions of H-fragments exhibit a peak of slow fragments below 0.4 eV with maximum at approximately 0.05 eV, and a tail of faster fragments extending to 1.5 eV. The dependence on the cluster size suggests that the former fragments originate fromthe photodissociation of an H2O molecule in the cluster interior leading to the H-fragment caging and eventually generation of a hydronium H3O molecule. The photolysis of surface molecules yields the faster fragments. At 193 nm (6.42 eV) a single photonprocess leads to a small signal from molecules directly photolyzed on the cluster surface. The two photon processes at this wavelength may lead to cluster ionization competing with its photodissociation, as suggested by the lack of H-fra
Czech name
Disociace vody na ledových nanočásticích při 24 nm a 193 nm.
Czech description
Teoreticky i experimentálně byla studována disociace vody na ledových nanočásticích při 24 nm a 193 nm.

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
—

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)