Abstract
The influence of thermal action on X-ray optics performance and structure of films and transition regions in multilayer Mo/Be mirrors optimized for a reflection maximum in the interval 11.2–11.4 nm at normal incidence has been considered. The annealing temperature reached 300°C and the annealing time was 1 and 4 h. It has been shown that after thermal annealing in vacuum for 1 h at 300°C, the reflection coefficient rises; however, when the annealing time grows to 4 h, it drops. Grains in molybdenum films become finer, and the profiles of transition regions change from exponential to linear. The period of multilayer mirrors has remained the same under all annealing conditions.
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Funding
This study was supported by the Russian Foundation for Basic Research (grant nos. 17-52-150006 and 18-02-00588) and was done in accordance with state task no. 0035 2014-0204 for the Institute of Physics of Microstructures, Russian Academy of Sciences, using equipment from the Common Use Center, Institute of Physics of Microstructures.
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Smertin, R.M., Garakhin, S.A., Zuev, S.Y. et al. Influence of Thermal Annealing on the Properties of Multilayer Mo/Be Mirrors. Tech. Phys. 64, 1692–1697 (2019). https://doi.org/10.1134/S1063784219110252
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DOI: https://doi.org/10.1134/S1063784219110252