High-temperature threshold of damage of SiC by swift heavy ions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00617441" target="_blank" >RIV/68378271:_____/25:00617441 - isvavai.cz</a>
Alternative codes found
RIV/61389021:_____/25:00647867
Result on the web
<a href="https://doi.org/10.1016/j.jallcom.2025.178524" target="_blank" >https://doi.org/10.1016/j.jallcom.2025.178524</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jallcom.2025.178524" target="_blank" >10.1016/j.jallcom.2025.178524</a>

Result language
angličtina
Original language name
High-temperature threshold of damage of SiC by swift heavy ions
Original language description
At ambient conditions, SiC is resistant to irradiation with swift heavy ions (SHI) decelerating in the electronic stopping regime. However, there is no experimental data on the SiC irradiation at elevated temperatures. To investigate this problem, we evaluate the stability of SiC to SHI impacts at high temperatures up to 2200 K. We combine a transport Monte-Carlo simulation, describing excitation of the electronic and atomic systems using temperature-dependent scattering cross-sections, with molecular-dynamic modeling of the lattice response to the excitation. We demonstrate that increasing irradiation temperature increases the energy transferred to the atomic lattice from the excited electronic system. This material heating leads to the formation of a stable nanometric damaged core along the trajectory of 710 MeV Bi ion when the irradiation temperature overcomes the threshold of ~1800 K. In this case, a chain of nanometric voids forms along the ion trajectory due to the mass transport from the track core by edge dislocations. Voids of larger sizes appear at higher irradiation temperatures. At lower irradiation temperatures, the damaged regions recrystallize completely within ~100 ps after the ion passage.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)

Project
<a href="/en/project/LM2023068" target="_blank" >LM2023068: Prague Asterix Laser System</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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