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Proceedings Paper

Surface investigation and aluminum oxide estimation on test filters for the ATHENA X-IFU and WFI detectors
Author(s): Luisa Sciortino; Ugo Lo Cicero; Elena Magnano; Igor Píš; Marco Barbera
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Paper Abstract

The ATHENA mission provides the demanded capabilities to address the ESA science theme "Hot and Energetic Universe". Two complementary instruments are foreseen: the X-IFU (X-ray Integral Field Unit) and WFI (Wide Field Imager). Both the instruments require filters to avoid that the IR radiation heats the X-IFU cryogenic detector and to protect the WFI detector from UV photons. Previous experience on XMM filters recommends to employ bilayer membrane consisting of aluminum deposited on polyimide. In this work, we use the X-ray Photoelectron Spectroscopy (XPS) to quantify the native aluminum oxide thickness that affects the spectral properties of the filter. The estimation of the oxide thickness of the prototype filter for ATHENA is a considerable information for the conceptual design of the filters.

Paper Details

Date Published: 18 July 2016
PDF: 8 pages
Proc. SPIE 9905, Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray, 990566 (18 July 2016); doi: 10.1117/12.2232376
Show Author Affiliations
Luisa Sciortino, Univ. degli studi di Palermo (Italy)
Ugo Lo Cicero, Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Palermo (Italy)
Elena Magnano, Consiglio Nazionale delle Ricerche (Italy)
Univ. of Johannesburg (South Africa)
Igor Píš, Elettra-Sincrotrone Trieste S.C.p.A. (Italy)
Marco Barbera, Univ. degli Studi di Palermo (Italy)
Istituto Nazionale di Astrofisica, Osservatorio Astronomico di Palermo (Italy)


Published in SPIE Proceedings Vol. 9905:
Space Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray
Jan-Willem A. den Herder; Tadayuki Takahashi; Marshall Bautz, Editor(s)

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