@article{SchmiedeskampKloidtStocketal.1994, author = {Schmiedeskamp, Bernt and Kloidt, Andreas and Stock, Hans-J{\"u}rgen and Kleineberg, Ulf and D{\"o}hring, Thorsten and Pr{\"o}pper, Michael and Rahn, Steffen and Hilgers, Kerstin and Heidemann, Bernhard and Tappe, Thorsten and Heinzmann, Ulrich and Krumrey, Michael K. and M{\"u}ller, Peter and Scholze, Frank and Heidemann, Klaus F.}, title = {Electronbeam-deposited Mo/Si and MoxSiySi multilayer X-ray mirrors and gratings}, series = {Optical Engineering}, volume = {33}, journal = {Optical Engineering}, number = {4}, pages = {1314 -- 1321}, year = {1994}, subject = {R{\"o}ntgenspiegel}, language = {en} } @inproceedings{KloidtStockKleinebergetal.1992, author = {Kloidt, Andreas and Stock, Hans-J{\"u}rgen and Kleineberg, Ulf and D{\"o}hring, Thorsten and Pr{\"o}pper, Michael and Nolting, Kerstin and Heidemann, Bernhard and Tappe, Thorsten and Schmiedeskamp, Bernt and Heinzmann, Ulrich and Krumrey, Michael K. and M{\"u}ller, Peter and Scholze, Frank and Rahn, Steffen and Heidemann, Klaus F.}, title = {Fabrication, thermal stability, and reflectivity measurements of Mo/Si multilayers as x-ray mirrors and other optical elements}, series = {Proceedings of SPIE}, volume = {1742}, booktitle = {Proceedings of SPIE}, pages = {593 -- 603}, year = {1992}, subject = {R{\"o}ntgenspiegel}, language = {en} } @inproceedings{DoehringStollenwerkStadtmuelleretal.2021, author = {D{\"o}hring, Thorsten and Stollenwerk, Manfred and Stadtm{\"u}ller, Johannes and Zeising, Sebastian and Flachs, Dennis and Stehlikova, Veronika and Burwitz, Vadim and Krumrey, Michael K. and Cotroneo, Vincenzo and Klementova, Mariana}, title = {Characterisation of X-ray mirrors based on chromium-iridium tri-layer coatings}, series = {Proceedings of SPIE}, volume = {2021}, booktitle = {Proceedings of SPIE}, number = {11776}, publisher = {SPIE}, organization = {TH Aschaffenburg}, doi = {https://doi.org/10.1117/12.2592551}, pages = {1177607-1 -- 11776076}, year = {2021}, abstract = {Iridium-based layer systems are highly effective mirror coatings for space-born X-ray telescopes. During the recent years, Aschaffenburg University of Applied Sciences and its partners developed stress compensated chromium-iridium coatings for such astronomical applications, using chromium as an adhesive layer between iridium reflective layer and mirror substrate. However, there was room for improvement: To overcome the disturbing reflectivity reduction of the iridium absorption edge around 2 keV photon energy, thin overcoat layers of chromium are applied in addition now. This layer system has been analyzed by atomic force microscopy and transmission electron microscopy images. Furthermore, the reflectivity of such innovative X-ray mirrors based on chromium-iridium tri-layer coatings was recently measured at PTB's four-crystal monochromator beamline at the synchrotron radiation facility BESSY II. The experimental results, obtained for photon energies between 1.9 keV and 11 keV at two grazing incidence angles (0.6 degree and 0.9 degree) and their comparison with corresponding simulations are presented in this contribution. When compared to simulations of pure iridium coatings, a significantly higher reflectivity was achieved especially in the soft X-ray regime between 2 keV and 4 keV. Such chromium-iridium tri-layer coatings have high potential to increase the effective area for X-ray telescopes in Lobster Eye Design, for Wolter-I type X-ray optics, and for silicon pore optics as considered for the ATHENA telescope of the European Space Agency.}, subject = {R{\"o}ntgenspiegel}, language = {en} }