Quantitative analysis of aligned-molecule photoelectron angular distributions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10506676" target="_blank" >RIV/00216208:11320/25:10506676 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=XxgcZkBd7k" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=XxgcZkBd7k</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.111.012815" target="_blank" >10.1103/PhysRevA.111.012815</a>
Alternative languages
Result language
angličtina
Original language name
Quantitative analysis of aligned-molecule photoelectron angular distributions
Original language description
Molecular frame photoelectron angular distributions (MFPADs) provide the full available detail of the photoionization process. Careful analysis of the evolving photoelectron angular distribution during the coherent rotation of a nonadiabatically aligned sample of molecules allows the detail which is smoothed out by orientational averaging in the laboratory frame to be resolved. Here we exploit a high flux monochromated HHG lightsource to provide single-photon photoelectron angular distributions of field-free aligned molecules. Our measurements are sensitive to alignment frame variations in even beta n parameters up to n = 6 in the PADs of the first four ionization channels of OCS, allowing for rigorous benchmarking of the cutting edge theoretical methods used for simulation of MFPADs. We demonstrate that experimentally derived molecular alignment distributions may be combined with theoretical MFPADs to generate theoretical alignment-frame PADs which provide a quantitative comparison to the experimental beta n parameters. The experimental data and ePSproc simulated PADs show quantitative agreement and sensitivity to picometer-scale changes in the molecular geometry. This combined methodology therefore provides a versatile way of studying geometry-sensitive continuum structural features for nondissociative ionization processes which may not be studied in the recoil frame. These measurements therefore provide a strict test of the theoretical descriptions and will stand as benchmark measurements for future comparisons to higher-level theory.
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
10300 - Physical sciences
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
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
Physical review A
ISSN
2469-9926
e-ISSN
2469-9934
Volume of the periodical
111
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
15
Pages from-to
012815
UT code for WoS article
001413197800004
EID of the result in the Scopus database
2-s2.0-85218635341