Yurkevich Oksana, Maksimova Ksenia, Goikhman Alexander, Grunin Alexey, Prokopovich Pavel, Tyurin Alexander, Medvedskaya Polina, Lyatun Ivan, Snigireva Irina, Snigirev Anatoly
Research and Educational Centre `Functional Nanomaterials', Immanuel Kant Baltic Federal University, Nevskogo Street 14, Kaliningrad 236041, Russian Federation.
Research and Educational Center `Nanotechnologies and Nanomaterials', G. R. Derzhavin Tambov State University, Zashitniy Pereulok 7, Tambov 392000, Russian Federation.
J Synchrotron Radiat. 2017 Jul 1;24(Pt 4):775-780. doi: 10.1107/S1600577517007925. Epub 2017 Jun 15.
Beryllium, being one of the most transparent materials to X-ray radiation, has become the material of choice for X-ray optics instrumentation at synchrotron radiation sources and free-electron laser facilities. However, there are concerns due to its high toxicity and, consequently, there is a need for special safety regulations. The authors propose to apply protective coatings in order to seal off beryllium from the ambient atmosphere, thus preventing degradation processes providing additional protection for users and prolonging the service time of the optical elements. This paper presents durability test results for Be windows coated with atomic-layer-deposition alumina layers run at the European Synchrotron Radiation Facility. Expositions were performed under monochromatic, pink and white beams, establishing conditions that the samples could tolerate without radiation damage. X-ray treatment was implemented in various environments, i.e. vacuum, helium, nitrogen, argon and dry air at different pressures. Post-process analysis revealed their efficiency for monochromatic and pink beams.
铍作为对X射线辐射最透明的材料之一，已成为同步辐射源和自由电子激光设施中X射线光学仪器的首选材料。然而，由于其高毒性引发了一些担忧，因此需要制定特殊的安全规定。作者建议应用防护涂层，以便将铍与周围大气隔离开来，从而防止降解过程，为使用者提供额外保护，并延长光学元件的使用寿命。本文展示了在欧洲同步辐射装置上对涂有原子层沉积氧化铝层的铍窗进行的耐久性测试结果。在单色光、粉红光束和白色光束下进行了照射实验，确定了样品在无辐射损伤情况下能够耐受的条件。在不同压力的真空、氦气、氮气、氩气和干燥空气中的各种环境下实施了X射线处理。后处理分析揭示了它们对单色光和粉红光束的有效性。
