Number of the records: 1
An interplay of various damage channels in polyethylene exposed to ultra-short XUV/X-ray pulses
- 1.
SYSNO ASEP 0545323 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title An interplay of various damage channels in polyethylene exposed to ultra-short XUV/X-ray pulses Author(s) Medvedev, Nikita (FZU-D) ORCID, RID
Babaev, P. (RU)
Chalupský, Jaromír (FZU-D) RID, ORCID
Juha, Libor (FZU-D) RID, ORCID, SAI
Volkov, A.E. (RU)Number of authors 5 Source Title Physical Chemistry Chemical Physics. - : Royal Society of Chemistry - ISSN 1463-9076
Roč. 23, č. 30 (2021), s. 16193-16205Number of pages 13 s. Language eng - English Country GB - United Kingdom Keywords polyethylene damage mechanism ; exposition to ultra-short XUV/X-ray pulses ; theoretical study Subject RIV BH - Optics, Masers, Lasers OECD category Particles and field physics R&D Projects LTT17015 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LM2018114 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA20-08452S GA ČR - Czech Science Foundation (CSF) Research Infrastructure e-INFRA CZ - 90140 - CESNET, zájmové sdružení právnických osob Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 000677456900001 EID SCOPUS 85112406452 DOI 10.1039/d1cp02199k Annotation Polyethylene (PE) irradiated with femtosecond extreme ultraviolet or X-ray laser pulses in a single-shot damage regime is studied theoretically. The employed microscopic simulation tool XTANT-3 traces nonequilibrium electron kinetics, energy exchange between electrons and atoms, nonthermal modification of interatomic potential, and the induced atomic response. It is found that the nonthermal detachment of hydrogen atoms in bulk PE starts at the threshold deposited dose of 0.05 eV per atom. With an increase in the dose, more hydrogen atoms detach from the carbon backbone. At a dose of 0.3 eV per atom, hydrogen behaves like a liquid flowing around carbon chains. In the range of doses from 0.5 eV to 0.9 eV per atom, the electronic excitation induces formation of new carbon structures embedded in the hydrogen liquid, such as benzene-like rings. At doses above 0.9 eV per atom, the carbon subsystem also melts into liquid.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2022 Electronic address https://doi.org/10.1039/d1cp02199k
Number of the records: 1