Microscopic kinetics in poly(Methyl methacrylate) exposed to a single ultra-short xuv/x-ray laser pulse
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F21%3A00548840" target="_blank" >RIV/61389021:_____/21:00548840 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/21:00547891
Result on the web
<a href="https://www.mdpi.com/1420-3049/26/21/6701" target="_blank" >https://www.mdpi.com/1420-3049/26/21/6701</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/molecules26216701" target="_blank" >10.3390/molecules26216701</a>
Alternative languages
Result language
angličtina
Original language name
Microscopic kinetics in poly(Methyl methacrylate) exposed to a single ultra-short xuv/x-ray laser pulse
Original language description
We study the behavior of poly(methyl methacrylate) (PMMA) exposed to femtosecond pulses of extreme ultraviolet and X-ray laser radiation in the single-shot damage regime. The employed microscopic simulation traces induced electron cascades, the thermal energy exchange of electrons with atoms, nonthermal modification of the interatomic potential, and a triggered atomic response. We identify that the nonthermal hydrogen decoupling triggers ultrafast fragmentation of PMMA strains at the absorbed threshold dose of ~0.07 eV/atom. At higher doses, more hydrogen atoms detach from their parental molecules, which, at the dose of ~0.5 eV/atom, leads to a complete separation of hydrogens from carbon and oxygen atoms and fragmentation of MMA molecules. At the dose of ~0.7 eV/atom, the band gap completely collapses indicating that a metallic liquid is formed with complete atomic disorder. An estimated single-shot ablation threshold and a crater depth as functions of fluence agree well with the experimental data collected.
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
10306 - Optics (including laser optics and quantum optics)
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)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Molecules
ISSN
1420-3049
e-ISSN
1420-3049
Volume of the periodical
26
Issue of the periodical within the volume
21
Country of publishing house
CH - SWITZERLAND
Number of pages
12
Pages from-to
6701
UT code for WoS article
000723179900001
EID of the result in the Scopus database
2-s2.0-85119604201