X-ray measurements of the supermirror using synchrotron radiation

Details X-ray measurements of the supermirror using synchrotron radiation X-ray measurements of the supermirror using synchrotron radiation

Jan 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001spie.4145...53o&link_type=abstract

Proc. SPIE Vol. 4145, p. 53-60, Advances in X-Ray Optics, Andreas K. Freund; Tetsuya Ishikawa; Ali M. Khounsary; Derrick C. Manc

Physics

Optics

1

Scientific paper

We measured Pt/C multilayers and supermirrors with hard X-rays at synchrotron radiation facility SPring-8. These mirrors were fabricated for the hard X-ray telescope on board our balloon- borne experiment named InFOC(mu) S. The energy band of InFOC(mu) S telescope is from 20 to 40 keV, thus characterization of reflectors with hard X-rays above 20 keV is important. SPring-8 is one of the world's most powerful third-generation synchrotron radiation facility. We measured multilayers and several types of supermirrors. We also measured reflectivity of supermirrors on three different kind of substrates; float grass, gold replica foil and platinum replica foil. From the reflectivity measurements, performance of these supermirrors was found quite satisfactory for our telescope. Furthermore platinum replica foil substrate showed significantly better reflectivity than gold replica foil. Thus we chose platinum replica foil as a substrate for flight reflectors. Scattering measurements gave us important informations. Our preliminary analysis showed that the scattered power distribution can be explained as a convolution of structures in lateral and depth direction.

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