Physics – Optics
Scientific paper
Feb 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2011...18c&link_type=abstract
Proc. SPIE Vol. 2011, p. 18-33, Multilayer and Grazing Incidence X-Ray/EUV Optics II, Richard B. Hoover; Arthur B. Walker; Eds.
Physics
Optics
1
Scientific paper
In recent years there has been an increased interest in the possible use of Ir as the reflecting surface in X-ray telescope programs. An X-ray study of such surfaces produced by sputtering of Ir on highly polished Zerodur flats is presented here. The study was performed using Fe K(alpha) 1 (6.404 Kev) and Cu K(alpha) 1 (8.048 keV) and includes measurement of total external reflection and scattering. The scattering measurement was made with three different instruments arrangements; one employed a 1D position sensitive detector for low resolution studies giving approximately 30 arcsec resolution (FWHM), and the other two arrangements employed channel cut crystals providing resolutions (FWHM) of 5 arcsec and 1 arcsec, respectively at Cu K(alpha) 1. The reflectivity study revealed a very close correspondence with a theoretical model based on recently published optical constants. This important result shows that an Ir coating can be produced with nominal bulk density.
Abdali Salim
Christensen Finn E.
Hornstrup Allan
Romaine Suzanne E.
Schnopper Herbert W.
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