From Event: SPIE Optical Engineering + Applications, 2021
It has been known for quite some time that thin, low atomic number (Z) overcoats on x-ray mirrors with high-Z coatings, for example, carbon on iridium, can provides acceptable reflectivity response at high x-ray energies while boosting reflectivity in the low energy range. Recent published work has complemented this idea by adding an intermediate-Z coating interposed between the low and high Z coatings—a so-called graded-Z coating—which also offers improved reflectivity response at mid-range x-ray energies. In this paper I discuss a simple methodology for designing and optimizing graded-Z coatings in the 0.1-10 keV energy band.
© (2021) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mark L. Schattenburg, "A design methodology for broadband x-ray mirror coatings," Proc. SPIE 11822, Optics for EUV, X-Ray, and Gamma-Ray Astronomy X, 118220T (Presented at SPIE Optical Engineering + Applications: August 04, 2021; Published: 5 August 2021); https://doi.org/10.1117/12.2595494.6266699259001.