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9 September 2019 X-ray reflectivity measurements at chromium-iridium tri-layer coatings
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Abstract
Studying astronomical objects in the X-ray regime, iridium-based layer systems are highly effective reflective materials for telescopes mirrors. Aschaffenburg University and the Czech Technical University in Prague jointly developed stress compensated chromium-iridium coatings. To overcome the disturbing reflectivity reduction of the iridium absorption edge around 2 keV photon energy and improve general reflectivity at lower incident energies, thin overcoat layers of chromium have been applied in addition. Corresponding measurements at several X-ray lines have been performed on these samples at the PANTER test facility of the Max-Planck Institute for extraterrestrial Physics. A part of the experimental results and their comparison with theoretical simulations are presented in this contribution.
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Veronika Stehlíkova, Thorsten Döhring, Tobias Schäfer, Manfred Stollenwerk, Peter Friedrich, Vadim Burwitz, Gisela Hartner, Miranda Bradshaw, Yingyu Liao, and Carlo Pelliciari "X-ray reflectivity measurements at chromium-iridium tri-layer coatings", Proc. SPIE 11119, Optics for EUV, X-Ray, and Gamma-Ray Astronomy IX, 111191L (9 September 2019); https://doi.org/10.1117/12.2530439
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