Graded d-spacing multilayer telescope for high-energy x-ray astronomy
Graded d-spacing multilayer telescope for high-energy x-ray astronomy
复制标题
用于高能 X 射线天文学的分级 d 间距多层望远镜
DOI：
10.1117/12.51230
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
K. Parker
中科院分区：
文献类型：
--
作者：
F. Christensen;A. Hornstrup;N. Westergaard;H. Schnopper;J. Wood;K. Parker
本文提出了一种高能望远镜的设计方案，它将掠入射几何结构与布拉格反射相结合，采用梯度d间距多层膜，可获得高达60 keV的灵敏度。该概念利用全反射和一阶布拉格反射在渐变d-间隔多层结构的方式，较高的能量被反射从最深的层在堆栈中。本文提出的具体设计是基于Ni/C和Mo/C结构，间距从25 A到100 A。X射线反射率数据获得与Cu Kc 1（8。05 keV）的第一梯度d间距结构。
A high energy telescope design is presented which combines grazing incidence geometry with Bragg reflection in a graded d-spacing multilayer coating to obtain significant sensitivity up to --6O keV. The concept utilizes total reflection and first order Bragg reflection in a graded d-spacing multilayer structure in a way that higher energies are reflected from the deepest layers in the stack. The specific design presented in this paper is based on Ni/C and Mo/C structures with dspacings ranging from 25A to 100 A. X-ray reflectivity data obtained with Cu Kc1 (8. 05 keV) are presented from the first graded d-spacing structures of this kind.