Coating stress analysis and compensation for iridium based X-ray mirrors

Abstract : Iridium-based coatings for mirrors of X-ray telescopes are studied. In particular, stress induced deformation is characterized and shown to be compressive and equal to -1786 MPa. Two methods for stress compensation are then studied. One relies on the deposition of silica on the back surface of the substrate and a second one relies on the deposition of a chromium sublayer. Advantages and drawbacks of each of these techniques are presented.
Document type :
Journal articles
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-02066446
Contributor : Julien Lumeau <>
Submitted on : Tuesday, March 26, 2019 - 4:56:23 PM
Last modification on : Tuesday, April 2, 2019 - 3:25:32 PM

File

Applied Optics - UA - Final - ...
Files produced by the author(s)

Identifiers

Collections

Citation

Anne-Catherine Probst, Thomas Begou, Thorsten Döhring, Sebastian Zeising, Manfred Stollenwerk, et al.. Coating stress analysis and compensation for iridium based X-ray mirrors. Applied optics, Optical Society of America, 2018, 57 (29), pp.8775. ⟨10.1364/AO.57.008775⟩. ⟨hal-02066446⟩

Share

Metrics

Record views

11

Files downloads

14