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Proposal for a Laue lens with quasi‐mosaic crystalline tiles
Author(s) -
Guidi Vincenzo,
Bellucci Valerio,
Camattari Riccardo,
Neri Ilaria
Publication year - 2011
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889811035709
Subject(s) - mosaicity , bent molecular geometry , optics , crystal (programming language) , lens (geology) , mosaic , anisotropy , materials science , physics , crystallography , diffraction , x ray crystallography , chemistry , archaeology , computer science , composite material , history , programming language
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. It is highlighted that crystals bent by the quasi‐mosaic effect allow very high resolution focusing with respect to mosaic crystals. Under the same conditions for energy passband, crystal size and flux of incident photons, a Laue lens based on quasi‐mosaic crystals would increase the signal‐to‐noise ratio by about an order of magnitude compared to the same lens with mosaic crystals. Moreover, no mosaic defocusing occurs for quasi‐mosaic crystals.