| Zugriffsnummer | 44915 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | mit Peer Review |
| Sprache | Englisch |
| Titel | Long-term performance and durability of Ir/B4C multilayer x-ray mirrors: focusing on composition, structure, and reflectivity properties |
| Autor(in); Institution |
Jafari, Atefeh; Technical University of Denmark, DTU Space, Lyngby, DENMARK
Ferreira, Deseree D. M.; Technical University of Denmark, DTU Space, Lyngby, DENMARK
Kadkhodazadeh, Shima; Technical University of Denmark, DTU Nanolab, Lyngby, DENMARK
Kasama, Takeshi; Technical University of Denmark, DTU Nanolab, Lyngby, DENMARK
Massahi, Sonny; Technical University of Denmark, DTU Space, Lyngby, DENMARK
Svendsen, Sara; Technical University of Denmark, DTU Space, Lyngby, DENMARK
Vu, Lan M.; Technical University of Denmark, DTU Space, Lyngby, DENMARK
Henriksen, Peter L.; Technical University of Denmark, DTU Space, Lyngby, DENMARK
Balogh, Zoltàn; Technical University of Denmark, DTU Nanolab, Lyngby, DENMARK
Krumrey, Michael; 7.2, Röntgenmesstechnik mit Synchrotronstrahlung, PTB-Berlin
Cibik, Levent; 7.2, Röntgenmesstechnik mit Synchrotronstrahlung, PTB-Berlin
Christensen, Finn E.; Technical University of Denmark, DTU Space, Lyngby, DENMARK
Shortt, Brian; European Space Agency, Noordwijk, NETHERLANDS
|
| Quelle/Jahr | Journal of Astronomical Telescopes, Instruments, and Systems: 6 (2020), 3, 15 S. |
| Artikelnummer | 034005 |
| ISSN | 2329-4124 (PRINT) ; 2329-4221 (ONLINE) |
| DOI | |
| Verlag | Bellingham, Wash.: SPIE |
| Zusammenfassung | Multilayer (ML) thin film coatings have shown promise in achieving hard x-ray nanofocusing with high reflectivity and high resolution. The chemical, structural, and long-term stability of Ir/B4C MLs, which are of great interest to the synchrotron and astrophysics communities, are not yet fully understood. The evolution of the x-ray performance of Ir/B4C ML mirrors was monitored over 5 years, and the chemical and structural properties were investigated in depth. Reflectivity scans reveal significant alteration in the energy range of 3.4 to 10 keV over this period. Furthermore, thickness and density degradation of B4C layers were observed in scanning electron transmission microscopy results. The oxidation of B4C occurs only for the top layers, whereas the buried B4C layers go through various complex chemical modifications. The x-ray reflectivity model of Ir/B4C structure was modified, based on the experimental findings, and resulted in good understanding of the long-term reflectivity performance of the x-ray mirror coatings. |
| Themenbereich der Metrologie | Photometrie und Radiometrie |
Zitierung
Jafari, A., Ferreira, D. D. M., Kadkhodazadeh, S., Kasama, T., Massahi, S., Svendsen, S., Vu, L. M., Henriksen, P. L., Balogh, Z., Krumrey, M., Cibik, L., Christensen, F. E., & Shortt, B. (2020). Long-term performance and durability of Ir/B4C multilayer x-ray mirrors: focusing on composition, structure, and reflectivity properties. Journal of Astronomical Telescopes, Instruments, and Systems, 6(3), 15 S. https://doi.org/10.1117/1.jatis.6.3.034005