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- Iridium (1)
- Röntgenteleskop (1)
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- X-ray (1)
- astronomy (1)
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- iridium (1)
- mirror (1)
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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.