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Proceedings Paper

Design and fabrication of C/W hard x-ray supermirrors
Author(s): Zhong Zhang; Zhanshan Wang; Fengli Wang; Wennjuan Wu; Hongchang Wang; Shuji Qin; Lingyan Chen
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Paper Abstract

We designed two kinds of supermirrors composed of Carbon and Tungsten in current paper. Using Simplex Optimization method, we designed C/W supermirror with broad incident angular range (0.5°~0.9°) at Cu Kα line (λ=0.154nm). Connecting the analytical method, based on oversimplified analytical and semi-empirical formulas, with the Simplex Optimization method, we designed C/W supermirror with broad photon energy range (16~25keV), at θ=0.5°. The negative effect, due to the interfacial roughness and diffusion between the adjacent sublayers in multilayer, also emerges in simulating the practice performance of the both supermirrors. The supermirrors with broad incident angular range were fabricated by DC magnetron sputtering, because such supermirror is easy to be measured at our lab, using X-ray diffractormeter. The measured reflectivity near the first order Bragg peak is about 30% at Cu Kα line. The roughness factor is about 0.84nm by the fitting data.

Paper Details

Date Published: 1 February 2006
PDF: 6 pages
Proc. SPIE 6034, ICO20: Optical Design and Fabrication, 60341Y (1 February 2006); doi: 10.1117/12.668172
Show Author Affiliations
Zhong Zhang, Tongji Univ. (China)
Zhanshan Wang, Tongji Univ. (China)
Fengli Wang, Tongji Univ. (China)
Wennjuan Wu, Tongji Univ. (China)
Hongchang Wang, Tongji Univ. (China)
Shuji Qin, Tongji Univ. (China)
Lingyan Chen, Tongji Univ. (China)

Published in SPIE Proceedings Vol. 6034:
ICO20: Optical Design and Fabrication
James Breckinridge; Yongtian Wang, Editor(s)

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