11 October 2011 Quasi-mosaic crystals for high-resolution focusing of hard x-rays through a Laue lens
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Abstract
Quasi-mosaicity is an effect of secondary bending within a crystal driven by crystalline anisotropy. This effect can be used to fabricate a series of curved crystals for the realization of a Laue lens. We highlight that crystals bent by quasi-mosaic effect envisage very high resolution focusing with respect to mosaic crystals. Under same conditions for energy passband and flux of incident photons, a Laue lens based on quasi-mosaic crystals would increase the signal-to-noise ratio by more than one order of magnitude as for the same lens with mosaic crystals. A proposal for the realization of a self-standing quasi-mosaic crystal is given. Here permanent bending of a crystal is achieved as a result of superficial indentations.
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R. Camattari, R. Camattari, V. Bellucci, V. Bellucci, V. Guidi, V. Guidi, I. Neri, I. Neri, } "Quasi-mosaic crystals for high-resolution focusing of hard x-rays through a Laue lens", Proc. SPIE 8147, Optics for EUV, X-Ray, and Gamma-Ray Astronomy V, 81471G (11 October 2011); doi: 10.1117/12.895311; https://doi.org/10.1117/12.895311
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