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Medium-sized grazing incidence high-energy X-ray telescopes employing continuously graded multilayers

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Authors:
  • Joensen, K. D. ;
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    unknown
  • Christensen, Finn Erland ;
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    Orcid logo0000-0001-5679-1946
    National Space Institute, Technical University of Denmark
  • Schnopper, H. W. ;
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    unknown
  • Gorenstein, P. ;
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    unknown
  • Susini, J. ;
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    unknown
  • Hoghoj, P. ;
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    unknown
  • Hustache, R. ;
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    unknown
  • Wood, J. L. ;
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    unknown
  • Parker, K.
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    unknown
DOI:
10.1117/12.140479
Abstract:
The authors present a concept of continuously graded multilayer structures for medium-sized X-ray telescopes which is based on several material combinations. They show that the theoretical reflectivity characteristics of these structures make them very advantageous when applied to high energy X-ray grazing incidence telescopes. They consider the performance of continuously graded Ni/C multilayers in a multi-focus, Kirkpatrick-Baez, geometry and show a significant improvement when compared to standard coatings of gold. For a total length of 3.3 m, a total aperture of 48 cm by 48 cm and 64 foci, an effective area of 250 cm2 at 60 keV and a FWHM field of view of 6' is obtained. It is shown that a modular array of conical telescopes (conical approximation to a Wolter-I geometry), with the same length and aperture provides similar effective areas. Energy-dispersive X-ray reflectivity data (15-70 keV) is presented for the first continuously graded multilayer of this kind
Type:
Journal article
Language:
English
Published in:
Proceedings of Spie, the International Society for Optical Engineering, 1993, Vol 1736, p. 239-248
Main Research Area:
Science/technology
Publication Status:
Published
Review type:
Peer Review
Conference:
X-Ray Detector Physics and Applications, 1993
Submission year:
1993
Scientific Level:
Scientific
ID:
250070645

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