Behavior of poly(methyl methacrylate) exposed to extreme ultraviolet laser radiation: A relationship between the high-energy photo-decomposition of the polymer and the mass spectra of emitted ions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00618800" target="_blank" >RIV/68378271:_____/25:00618800 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/25:10500511
Result on the web
<a href="https://hdl.handle.net/11104/0365779" target="_blank" >https://hdl.handle.net/11104/0365779</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.polymdegradstab.2025.111298" target="_blank" >10.1016/j.polymdegradstab.2025.111298</a>
Alternative languages
Result language
angličtina
Original language name
Behavior of poly(methyl methacrylate) exposed to extreme ultraviolet laser radiation: A relationship between the high-energy photo-decomposition of the polymer and the mass spectra of emitted ions
Original language description
This study investigates the fluence-dependent fragmentation of poly(methyl methacrylate) (PMMA) when irradiated with focused extreme ultraviolet (EUV) 26.4-eV photons, using an extreme ultraviolet laser ablation mass spectrometer (EUV LA-MS). Our findings reveal two critical fluence thresholds: the ablation threshold fluence (Fth=9 mJ center dot cm-2), after which the material begins to desorb and ionize nonthermally, and the transition fluence (Ftr=110 mJ center dot cm-2), where the interaction shifts to a thermal regime characterized by a nonlinear response in crater formation. The new nonlinear response function recovery (NoReFry) algorithm was used to reconstruct the dose-response curve, using detailed topographical data from atomic force microscopy scans of the ablated craters, enhancing estimation of beam fluence during the experiments. The mass spectra obtained during ablation showed distinct fragmentation pathways that evolve with fluence. Nonthermal conditions primarily produce small fragments, including short-chain ions and gaseous species, while the thermal regime allows for greater fragmentation complexity and the formation of higher molecular weight species. Using experimental data and Monte Carlo simulations, we compared the effects of nano- and femtosecond pulses on the ablation threshold of PMMA. Comprehensive analysis of the mass spectra highlights the dynamics of photoinduced processes, providing insight into the ablation and ionization mechanisms critical for applications in materials processing with EUV radiation.
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
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
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
Polymer Degradation and Stability
ISSN
0141-3910
e-ISSN
1873-2321
Volume of the periodical
236
Issue of the periodical within the volume
June
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
10
Pages from-to
111298
UT code for WoS article
001443798800001
EID of the result in the Scopus database
2-s2.0-86000153326