A graded d-spacing multilayer telescope for high energy X-ray astronomy

Details A graded d-spacing multilayer telescope for high energy X-ray astronomy A graded d-spacing multilayer telescope for high energy X-ray astronomy

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1546..160c&link_type=abstract

In: Multilayer and grazing incidence X-ray/EUV optics; Proceedings of the Meeting, San Diego, CA, July 22-24, 1991 (A93-39658 15

Astronomy and Astrophysics

Astronomy

8

Design Analysis, Multilayer Insulation, X Ray Astronomy, X Ray Telescopes, Gold Coatings, Metal Foils, Reflectance

Scientific paper

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 -60 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 d-spacings ranging from 25 A to 100 A. X-ray reflectivity data obtained with Cu K-alpha(1) (8.05 keV) are presented from the first graded d-spacing structures of this kind.

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