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Enhancing the ATHENA effective area at low x-ray energies with unconventional overcoatings

  • Low density overcoatings (mainly based on materials containing Carbon) onto usual hi Z materials (like Ir, Au or Pt) have been proposed more than 10 years ago for enhancing the X-ray reflectivity at low energy (between 0.5 and 4 keV) in X-ray astronomical optics. The hack is to use the total reflection from the low density material (which do not suffer much the photoelectric absorption) at low energy, while the photons at high energy are reflected by the high density material. Now for several future projects like e.g. ATHENA and eXTP it is foreseen the use of low density overcoatings that will importantly increase the effective area at low energy. In this poster we will discuss about the use of materials different from the ones considered so far, in particular based on a thin layer of Chromium followed by another layer of a Carbon-like material, and of novel approaches for their application.
  • Poster
Metadaten
Author:Pareschi Giovanni, Thorsten DöhringORCiD, Guiseppe Valsecchi, Luca Magagnin, Miranda Bradshaw, Vadim Burwitz, Marta Maria Civitani, Vincenzo Cotroneo, Eugenio Gibertini, Carlo Pelliciari, Giorgia Sironi, Yang Yang
URL:https://indico.ict.inaf.it/event/720/contributions/5665/
Parent Title (English):Proceedings of the X-RAY ASTRONOMY 2019 conference
Document Type:Other
Language:English
Year of Completion:2019
Date of first Publication:2019/09/13
Creating Corporation:Istituto Nazionale di Astrofisica
Contributing Corporation:TH Aschaffenburg
Release Date:2021/05/25
Tag:ATHENA; X-ray; coating; mirror; reflectivity
GND Keyword:Röntgenteleskop
Volume:2019
Page Number:1
First Page:1
Last Page:1
Urheberrecht:1
research focus :Materials / Innovative Material Processing
Materials / Material Testing & Sensor Technology
Licence (German):Keine Lizenz - es gilt das deutsche Urheberrecht
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