Share Email Print
cover

Proceedings Paper

Design of supermirrors for hard x-ray telescopes
Author(s): Fangfang Wang; Jingtao Zhu; Fengli Wang; Moyan Tan; Li Jiang; Zhong Zhang; Jing Xu; Xiaoqiang Wang; Lingyan Chen; Zhanshan Wang
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

X-ray grazing incidence supermirror which has extremely broad reflection band is a kind of multilayer with different each layer thickness down through the structure. The x-rays with different wavelengths or at different grazing incident angles can be reflected at different position in the supermirror structure and its band or angular response thus can be extended. These supermirrors have been developed and applied widely in many fields, especially in astrophysics. Existing approaches for designing similar neutron supermirrors are shown to provide respectable performance when applied to x-ray multilayers. However, none of these approaches consider the effects of imperfect layer interfaces and absorption in the overlying layers and all of them insist on the structure with the ratio of the layer thickness of absorbing material to the bi-layer spacing being a constant of 0.5. Adaptations of neutron designs that take these effects into account are presented in the present paper. In addition, other approaches, such as the method based on the combination of analytical and number methods, also are included and discussed in this paper. Two kinds of supermirrors with broad photon energy band or broad angular response have been designed using these different design methods. The results show that for specific applications, different optimization methods with different initial structures should be chosen accordingly to expect some overall improvement on performance of x-ray supermirrors.

Paper Details

Date Published: 5 August 2009
PDF: 12 pages
Proc. SPIE 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications, 738524 (5 August 2009); doi: 10.1117/12.836017
Show Author Affiliations
Fangfang Wang, Tongji Univ. (China)
Jingtao Zhu, Tongji Univ. (China)
Fengli Wang, Tongji Univ. (China)
Moyan Tan, Tongji Univ. (China)
Li Jiang, Tongji Univ. (China)
Zhong Zhang, Tongji Univ. (China)
Jing Xu, Tongji Univ. (China)
Xiaoqiang Wang, Tongji Univ. (China)
Lingyan Chen, Tongji Univ. (China)
Zhanshan Wang, Tongji Univ. (China)


Published in SPIE Proceedings Vol. 7385:
International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications
X.-C. Zhang; James M. Ryan; Cun-lin Zhang; Chuan-xiang Tang, Editor(s)

© SPIE. Terms of Use
Back to Top