A Temperature-Dependent X-Ray Absorption Characterization of Test Filters for the ATHENA Mission X-IFU Instrument

Journal
Date Issued
2018
Author(s)
•
•
•
Magnano, Elena
•
Nannarone, Stefano
•
Koshmak, Konstantin
•
DOI
Description
The research leading to these results has received funding from ASI (Italian Space Agency) through the Contract n. 2015-046-R.0 and from the European Union’s Horizon 2020 Program under the AHEAD project (grant agreement n. 654215). Angelo Giglia and Javid Rezvani are acknowledged for their assistance in transmission measurements and useful discussions. Igor Píš is acknowledged for his contribution to the experimental set up. Federico Salvador is acknowledged for the fabrication of the sample holder.
Abstract
In order to work properly, the X-ray Integral Field Unit of the ATHENA mission requires a set of thermal filters that block the infrared radiation, preventing it to reach the detector. Each filter will be mounted and thermally anchored onto a shield of the multistage cryostat and will be kept at the specific temperature of the stage. On the other hand, the filters partially absorb X-rays, and their transmittance has to be carefully characterized. The effect of temperature on the absorption edges of the elements that make up the filters has not been investigated yet. Here, we report the results of a preliminary run on the optical transmission data around the edges of C, N, and O at different temperatures for a selected test sample with 500 nm of polyimide and 100 nm of aluminum.
Volume
193
Issue
5-6
Start page
799
Uri
Url
Issn Identifier
0022-2291
Ads BibCode
2018JLTP..193..799S
Rights
open.access
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