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Proceedings Article

Development of grazing-incidence multilayer mirrors by direct Ni electroforming replication: a status report

[+] Author Affiliations
G. Pareschi, S. Basso, O. Citterio, M. Ghigo, F. Mazzoleni, D. Spiga

INAF-Osservatorio Astronomico di Brera (Italy)

W. Burkert, M. Freyberg, G. D. Hartner

Max-Planck-Institut fur Extraterrestrische Physik (Germany)

G. Conti, E. Mattaini

INAF - IASF (Italy)

G. Grisoni, G. Valsecchi

Media-Lario (Italy)

B. Negri

Italian Space Agency (Italy)

G. Parodi

BCV Progetti (Italy)

A. Marzorati

Officine Volonterio s.r.l. (Italy)

P. dell'Acqua

DELTAR Peschiera Borromeo (Italy)

Proc. SPIE 5900, Optics for EUV, X-Ray, and Gamma-Ray Astronomy II, 590008 (September 08, 2005); doi:10.1117/12.617362
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From Conference Volume 5900

  • Optics for EUV, X-Ray, and Gamma-Ray Astronomy II
  • Oberto Citterio; Stephen L. O'Dell
  • San Diego, California, USA | July 31, 2005

abstract

The Ni electroforming replication process has been used successfully by Beppo-SAX, JET-X/SWIFT, and XMM-Newton, to produce their gold-coated X-ray mirrors. The important feature of the technique is that, also with thin substrates, it is possible to achieve a good angular resolution, which is important for obtaining high signal-to-noise ratios in deep observations and imaging extended sources, while the assembly and integration of the monolithic shells is a relatively easy task. Two approaches can be used for the up grade of this technique also to the case of mirrors with multilayer coating, to be used in future hard X-ray missions: i) the direct replication of the mirror shell, after the deposition of the multilayer film on the master (mandrel) surface followed by the electroforming of the Ni walls, ii) the application of the multilayer film to the internal surface of Ni mirror shells, previously realized by replication. In this paper the last results achieved in Italy in the context of an activity aiming at the development of the former of the two methods will be presented and discussed.

© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

G. Pareschi ; S. Basso ; O. Citterio ; M. Ghigo ; F. Mazzoleni, et al.
"Development of grazing-incidence multilayer mirrors by direct Ni electroforming replication: a status report", Proc. SPIE 5900, Optics for EUV, X-Ray, and Gamma-Ray Astronomy II, 590008 (September 08, 2005); doi:10.1117/12.617362; http://dx.doi.org/10.1117/12.617362


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