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Proceedings Article

Nickel-replicated multilayer optics for soft and hard x-ray telescopes

[+] Author Affiliations
Giovanni Pareschi, Oberto Citterio, Mauro Ghigo, Francesco Mazzoleni

Osservatorio Astronomico di Brera (Italy)

A. Mengali, Carlo Misiano

Ctr. Tecnologie del Vuoto (Italy)

Proc. SPIE 4012, X-Ray Optics, Instruments, and Missions III, 284 (July 18, 2000); doi:10.1117/12.391564
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From Conference Volume 4012

  • X-Ray Optics, Instruments, and Missions III
  • Joachim E. Truemper; Bernd Aschenbach
  • Munich, Germany | March 27, 2000

abstract

In this paper we will report on recent progresses obtained in producing astronomical X-ray optics based on multilayer coatings exploiting the replication technique by Ni electroforming of the mirror support shell. It is well known that the use of multilayer reflectors with appropriate structures to be utilized instead of usual high density material (Ni, Au or Ir) monolayer mirrors can allow the extension of focusing techniques also in the hard X-ray energy band (10 - 100 keV). In addition, multilayer mirrors can offer important advantages also for applications in the classical X-ray band (0.1 - 10 keV), e.g., the enhancement of the effective area of a given telescope in a particular energy region of spectroscopical interest. The replication technique by Ni electroforming has already been successfully exploited for making the soft X-ray optics with Au coatings of the Beppo-SAX, JET-X and XMM-Newton space experiments. These telescopes are not only characterized by a large throughput, but they have also shown very good imaging capabilities. The approach under investigation from our group for the realization of multilayer grazing incidence telescopes in directly derived, with appropriate modifications, from that experience. We have already been able to fabricate by Ni electroforming replication flat Ni/C multilayer mirrors with a very good X-ray reflectivity. Here we will present some results obtained from the optical and X-ray characterization of conical and double-conical prototype optics recently realized from our group following the same technique. The obtained results are very promising.

© (2000) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Giovanni Pareschi ; Oberto Citterio ; Mauro Ghigo ; Francesco Mazzoleni ; A. Mengali, et al.
"Nickel-replicated multilayer optics for soft and hard x-ray telescopes", Proc. SPIE 4012, X-Ray Optics, Instruments, and Missions III, 284 (July 18, 2000); doi:10.1117/12.391564; http://dx.doi.org/10.1117/12.391564


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