Femtosecond laser-assisted surface modification of tungsten with 10(15) W/cm(2) intensity in air and vacuum ambience

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F19%3A00329926" target="_blank" >RIV/68407700:21340/19:00329926 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.apsusc.2018.09.074" target="_blank" >https://doi.org/10.1016/j.apsusc.2018.09.074</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apsusc.2018.09.074" target="_blank" >10.1016/j.apsusc.2018.09.074</a>

Result language
angličtina
Original language name
Femtosecond laser-assisted surface modification of tungsten with 10(15) W/cm(2) intensity in air and vacuum ambience
Original language description
The present study deals with modification of tungsten surface with high-intensity (similar to 10(15) W/cm(2)) femtosecond laser in air and vacuum surrounding. Specific findings include: (a) the applied intensities produce crater-like damages with depth similar to 31.0 mu m in vacuum and similar to 7.2 mu m in air; (b) peripheral region of the damages is diffuse in air atmosphere unlike vacuum where it is more sharply defined; (c) hydrodynamic features, while present in vacuum, are dramatically reduced in air; (d) characteristic chemical surface changes occur at the surface, and (e) plasma forms in front of the target in both surroundings. The obtained results imply that the employed intensities, in a certain sense, can be used for simulation of some processes in the fusion reactor and for highly precise material removal and tungsten surface processing (by fine tuning of given fs laser parameters).
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
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)

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)

Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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