Gas bearing slumping and figure correction of x-ray telescope mirror substrates

Chalifoux, Brandon D.; Zuo, Heng; Wright, G.M.; Yao, Youwei; Heilmann, Ralf K.; Schattenburg, Mark L.

doi:10.1117/12.2232500

Cited by 2 publications

(1 citation statement)

References 12 publications

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“…These developments include, but are not limited to, active X-ray mirrors in thin glass 4 , thin slumped glass foils 5 and direct polishing of thin SiO 2 substrates 6 . Multiple techniques to further improve mirror performance and reduce residual figure errors and mounting-induced stress are also being developed at various institutions around the globe, and include: differential deposition 7,8 , ion-beam figuring 9,10 , low-stress coating techniques 11 , differential ion implantation 12 , active figure correction 13 and magnetostrictive corrections 14 . The citations noted are representative, as there are multiple groups working on each of these efforts.…”

Section: X-ray Opticsmentioning

confidence: 99%

The X-Ray Surveyor mission concept study: forging the path to NASA astrophysics 2020 decadal survey prioritization

2016

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The X-Ray Surveyor mission concept is unique among those being studied for prioritization in the NASA Astrophysics 2020 Decadal Survey. The X-Ray Surveyor mission will explore the high-energy Universe; providing essential and complimentary observations to the Astronomy Community. The NASA Astrophysics Roadmap (Enduring Quests, Daring Visions) describes the need for an X-Ray Observatory that is capable of addressing topics such as the origin and growth of the first supermassive black holes, galaxy evolution and growth of the cosmic structure, and the origin and evolution of the stars that make up our Universe. To address these scientifically compelling topics and more, an Observatory that exhibits leaps in capability over that of previous X-Ray Observatories in needed. This paper describes the current status of the X-Ray Surveyor Mission Concept Study and the path forward, which includes scientific investigations, technology development, and community participation.

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Section: X-ray Opticsmentioning

confidence: 99%

The X-Ray Surveyor mission concept study: forging the path to NASA astrophysics 2020 decadal survey prioritization

2016

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Freeform shaping of fused silica substrates via viscous deformation induced by a laser patterned, stressed film

2022

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Freeform optics enable improved optical solutions but their fabrication usually requires complicated precision machining processes. We report on an approach for freeform shaping of optical surfaces via a stress-induced viscous deformation of glass plates. We studied the deformation of fused silica substrates covered by specifically laser patterned films of substoichiometric silicon oxide during annealing at about 1100 °C in an oxidizing ambient. The obtained large deformation of the substrates can be understood by a mostly viscous deformation but can be described in analogy to a purely elastic deformation. Our results demonstrate the feasibility of a method for freeform shaping of individual optical substrates that only requires the preparation of a flat surface.

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Gas bearing slumping and figure correction of x-ray telescope mirror substrates

Cited by 2 publications

References 12 publications

The X-Ray Surveyor mission concept study: forging the path to NASA astrophysics 2020 decadal survey prioritization

The X-Ray Surveyor mission concept study: forging the path to NASA astrophysics 2020 decadal survey prioritization

Freeform shaping of fused silica substrates via viscous deformation induced by a laser patterned, stressed film

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