Impact of annealing on performance of X-ray mirror coatings for Athena
| Autor: | Sonny Massahi, Michael Krumrey, Boris Landgraf, L. Cibik, Arne S. Jegers, Sara Svendsen, Ivo Ferreira, Aniket Thete, Brian Shortt, Marcos Bavdaz, Desiree Della Monica Ferreira, Christian Gollwitzer, Evelyn Handick, Nis C. Gellert, Maximilien J. Collon, Finn Erland Christensen, Peter Lindquist Henriksen |
|---|---|
| Přispěvatelé: | O'Dell, Stephen L., Gaskin, Jessica A., Pareschi, Giovanni |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Atmospheric pressure Silicon business.industry Annealing (metallurgy) chemistry.chemical_element X-ray reectometry Direct bonding engineering.material Annealing symbols.namesake chemistry Coating Stack (abstract data type) engineering symbols Reective coatings Optoelectronics Athena van der Waals force X-ray mirrors business Reflectometry |
| Zdroj: | Henriksen, P L, Ferreira, D D M, Massahi, S, Svendsen, S, Gellert, N, Christensen, F E, Jegers, A S, Landgraf, B, Thete, A, Collon, M, Handick, E, Cibik, L, Krumrey, M, Gollwitzer, C, Ferreira, I, Shortt, B & Bavdaz, M 2021, Impact of annealing on performance of X-ray mirror coatings for Athena . in S L O'Dell, J A Gaskin & G Pareschi (eds), Proceedings of SPIE : Optics for EUV, X-Ray, and Gamma-Ray Astronomy X ., 118220D, SPIE-International Society for Optical Engineering, Proceedings of SPIE-The International Society for Optical Engineering, vol. 11822, SPIE Optical Engineering + Applications 2021, San Diego, California, United States, 01/08/2021 . https://doi.org/10.1117/12.2594559 |
| DOI: | 10.1117/12.2594559 |
| Popis: | As part of the manufacturing process of mirror modules for the Athena X-ray telescope, Silicon Pore Optics plates are assembled into mirror module stacks. The plates that form each stack are held together by direct bonding, relying on van der Waals forces and covalent bonds for adhesion. One way to increase the strength of the covalent bonds is through annealing of the mirror stacks. It is of critical importance to the mission to ensure compatibility between the reflective coating and any post-coating processing of the plates. We present our findings of the impact of annealing on the X-ray re ectance of coated mirrors relevant for the Athena mission. These are Ir single layers, as well as Ir/B4C, Ir/SiC, and Ir/C bilayers. We investigate the effect on the performance of the coatings after annealing at atmospheric pressure and at a low vacuum using X-ray reflectometry. B4C is found to suffer degradation from annealing under atmospheric conditions but not when annealed in vacuum. All other materials investigated are robust to atmospheric annealing. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|