0602980 - FZÚ 2025 RIV GB eng J - Journal Article
Tavakkoly, M. - Chalupský, Jaromír - Hájková, Věra - Hillert, W. - Jelínek, Šimon - Juha, Libor - Makita, M. - Mazza, T. - Meyer, M. - Montaño, J. - Sinn, H. - Vozda, Vojtěch - Vannonia, M.
Comparing single-shot damage thresholds of boron carbide and silicon at the European XFEL.
Journal of Synchrotron Radiation. Roč. 31, č. 5 (2024), s. 1067-1070. ISSN 0909-0495. E-ISSN 1600-5775
R&D Projects: GA MŠMT(CZ) LM2023068
Institutional support: RVO:68378271
Keywords : damage threshold * single-shot damage threshold * B4C coating * X-ray mirrors * XFEL
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 2.4, year: 2023 ; AIS: 0.878, rok: 2023
Method of publishing: Open access
DOI: https://doi.org/10.1107/S1600577524007318

Xray free-electron lasers (XFELs) enable experiments that would have been impractical or impossible at conventional X-ray laser facilities. Indeed, more XFEL facilities are being built and planned, with their aim to deliver larger pulse energies and higher peak brilliance. While seeking to increase the pulse power, it is quintessential to consider the maximum pulse fluence that a grazing-incidence FEL mirror can withstand. To address this issue, several studies were conducted on grazing-incidence damage by soft X-ray FEL pulses at the European XFEL facility. Boron carbide (B4C) coatings on polished silicon substrate were investigated using 1 keV photon energy, similar to the X-ray mirrors currently installed at the soft X-ray beamlines (SASE3). The purpose of this study is to compare the damage threshold of B4C and Si to determine the advantages, tolerance and limits of using B4C coatings.
Permanent Link: https://hdl.handle.net/11104/0360257