26 September 2013 Fabrication of quasi-mosaic Ge crystals for the LAUE project
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A series of quasi-mosaic curved crystals has been fabricated for the Laue project to build up a prototype of a Laue lens. Curvature has been imparted to the samples thanks to the grooving method, which makes it possible to realize self-standing curved plates. Samples are 10 × 30 × 2 mm3 Ge crystals characterized by two curvatures of different crystallographic planes. The primary curvature allows the focalization of the diffracted X-rays on a focal spot smaller than the crystal dimension. The secondary curvature, i.e. quasi-mosaic curvature, amplifies the diffraction efficiency by more than one order of magnitude with respect to an equivalent crystal without quasi-mosaic curvature.
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Riccardo Camattari, Alessandro Battelli, Valerio Bellucci, Ilaria Neri, Vincenzo Guidi, and Filippo Frontera "Fabrication of quasi-mosaic Ge crystals for the LAUE project", Proc. SPIE 8861, Optics for EUV, X-Ray, and Gamma-Ray Astronomy VI, 88610C (26 September 2013); doi: 10.1117/12.2024109; https://doi.org/10.1117/12.2024109

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