Electric-dipole-momentum sensitive Coulomb explosion in doubly ionized CO dimer and trimer: An environmental effect at molecular-scale
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F25%3A43931709" target="_blank" >RIV/60461373:22340/25:43931709 - isvavai.cz</a>
Result on the web
<a href="https://pubs.aip.org/aip/jcp/article/162/5/054302/3333267/Electric-dipole-momentum-sensitive-Coulomb" target="_blank" >https://pubs.aip.org/aip/jcp/article/162/5/054302/3333267/Electric-dipole-momentum-sensitive-Coulomb</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/5.0244051" target="_blank" >10.1063/5.0244051</a>
Alternative languages
Result language
angličtina
Original language name
Electric-dipole-momentum sensitive Coulomb explosion in doubly ionized CO dimer and trimer: An environmental effect at molecular-scale
Original language description
Molecular clusters are aggregates of molecules weakly bound by the van der Waals force between molecules. Removing one electron from each constitutive molecule results in van der Waals bond cleavages through Coulomb explosion. This provides an ideal prototype to further study the environmental effects played by one fragmented ion on the other one at the molecular scale. Here, we report an experimental measurement of the two-body Coulomb explosion of (CO)22+ and (CO)22+, produced in a 40 keV Ar2+ double-electron capture collision with a CO dimer and trimer. Accurate reaction pathways are identified with the advanced ion-ion coincidence and momentum-imaging techniques. The measured kinetic energy release deviates from the calculated results based on the reciprocal of internuclear distance (i.e., Coulomb interaction only) and which, therefore, requires the inclusion of rotational energy of CO+ initiated by molecular electric-dipole momentum. Molecular dynamics simulations reveal that the separation defining the rotational energy takes place within a few hundred fs after the onset of dissociation. This molecular-scale environmental effect significantly brings calculations and measurements of the kinetic energy release into agreement. © 2025 Author(s).
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/GA23-07066S" target="_blank" >GA23-07066S: Time-dependent simulations for time-resolved electronic spectroscopies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
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
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Volume of the periodical
162
Issue of the periodical within the volume
5
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
054302
UT code for WoS article
001413934600009
EID of the result in the Scopus database
2-s2.0-85217847267