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Proceedings Paper

Multilayer optics for hard x-ray astronomy by means of replication techniques
Author(s): Oberto Citterio; P. Cerutti; Francesco Mazzoleni; Giovanni Pareschi; Ennio Poretti; Paolo Lagana; A. Mengali; Carlo Misiano; Fabio Pozzilli; Enrico Simonetti
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Paper Abstract

In this paper we will report on an activity undertaken with the aim of setting up a method for the realization of hard x-ray multilayer mirror astronomical optics based on a replication process. Our approach foresees the direct deposition of the multilayer stack on to the mandrel by ion-beam sputtering followed by the deposition of the Nickel by means of an electrolytic bath. The Nickel gives the mechanical strength to the mirrors. All deposited materials are later on separated from the mandrel by cooling it. This is a natural extension of the method already successfully used for the production of the soft x-ray optics with Au monolayer coating for the SAX, JET-X and XMM telescopes. This method is particularly convenient because permits not only of keeping the mirror supports very thin but also of achieving good imaging performances. Here we will present the main features of this method and the x-ray reflectivity and topographic results obtained from a first prototype flat sample we produced following this way.

Paper Details

Date Published: 29 September 1999
PDF: 10 pages
Proc. SPIE 3766, X-Ray Optics, Instruments, and Missions II, (29 September 1999); doi: 10.1117/12.363644
Show Author Affiliations
Oberto Citterio, Osservatorio Astronomico di Brera (Italy)
P. Cerutti, none (Italy)
Francesco Mazzoleni, Osservatorio Astronomico di Brera (Italy)
Giovanni Pareschi, Osservatorio Astronomico di Brera (Italy)
Ennio Poretti, Osservatorio Astronomico di Brera (Italy)
Paolo Lagana, Ctr. Tecnologie del Vuoto (Italy)
A. Mengali, Ctr. Tecnologie del Vuoto (Italy)
Carlo Misiano, Ctr. Tecnologie del Vuoto (Italy)
Fabio Pozzilli, Ctr. Tecnologie del Vuoto (Italy)
Enrico Simonetti, Ctr. Tecnologie del Vuoto (Italy)

Published in SPIE Proceedings Vol. 3766:
X-Ray Optics, Instruments, and Missions II
Richard B. Hoover; Arthur B. C. Walker, Editor(s)

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