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Platinum/carbon multilayer reflectors for soft-x-ray optics
Applied Optics
|October 12, 2010
Summary
Platinum/carbon (Pt/C) multilayer reflectors were fabricated for soft-x-ray applications. These multilayer reflectors demonstrate high and stable reflectivity, with improved performance when coated with platinum.
Area of Science:
- Materials Science
- Optics
- X-ray Physics
Background:
- Multilayer reflectors are crucial for manipulating X-ray beams.
- Optimizing the performance of platinum/carbon (Pt/C) multilayers is essential for soft-X-ray applications.
Purpose of the Study:
- To fabricate Pt/C multilayer reflectors with varying d-spacings.
- To investigate factors influencing soft-X-ray reflectivity performance.
- To assess the stability and potential enhancements of these reflectors.
Main Methods:
- Fabrication of Pt/C multilayers using electron-beam evaporation.
- Characterization of reflectivity using characteristic X-rays and synchrotron radiation (0.8-8 keV).
- Analysis of interfacial roughness and the impact of substrate temperature and coatings.
Main Results:
- Pt/C multilayers with 10-20 layer pairs exhibited high and stable soft-X-ray reflectivity.
- Lower interfacial roughness (around 5 Å) was achieved at liquid-nitrogen deposition temperatures.
- A 100-Å platinum coating enhanced grazing angle reflectivity without compromising Bragg peak reflectivity.
Conclusions:
- Pt/C multilayers are effective for high and stable soft-X-ray reflectivity.
- Low-temperature deposition and platinum coatings are viable strategies for performance enhancement.
- These findings contribute to the development of advanced X-ray optical components.
