Fabrication, performance, and figure metrology of epoxy-replicated aluminum foils for hard x-ray focusing multilayer-coated segmented conical optics

Mario A. Jimenez-Garate; William W. Craig; Charles J. Hailey; Finn Erland Christensen; Ahsen M. Hussain

doi:10.1117/1.1315572

1 November 2000 Fabrication, performance, and figure metrology of epoxy-replicated aluminum foils for hard x-ray focusing multilayer-coated segmented conical optics

Mario A. Jimenez-Garate, William W. Craig, Charles J. Hailey, Finn Erland Christensen, Ahsen M. Hussain

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Optical Engineering, Vol. 39, Issue 11, (November 2000). https://doi.org/10.1117/1.1315572

We fabricated x-ray mirrors for hard x-ray (? 10 keV) telescopes using multilayer coatings and an improved epoxy-replicated aluminum foil (ERAF) nonvacuum technology. The ERAF optics have ~1 arcmin axial figure half-power diameter (HPD) and passed environmental testing. Reflectivity measurements at 8 keV on ERAFs with and without multilayer coatings show a 4.4 to 4.8 Å root mean square (rms) microroughness for correlation lengths ?15 µm. To reduce the dominant contribution of mirror assembly and large-scale distortion in the overall telescope HPD, we designed a figure metrology system and a new mounting technique. We describe a cylindrical metrology system built for fast axial and roundness figure measurement of hard x-ray conical optics. These developments lower cost and improve the optics performance of the HEFT (high-energy focusing telescope) and Constellation-X missions.

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Mario A. Jimenez-Garate, William W. Craig, Charles J. Hailey, Finn Erland Christensen, and Ahsen M. Hussain "Fabrication, performance, and figure metrology of epoxy-replicated aluminum foils for hard x-ray focusing multilayer-coated segmented conical optics," Optical Engineering 39(11), (1 November 2000). https://doi.org/10.1117/1.1315572

Published: 1 November 2000

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