Proposal for a Laue lens with quasi‐mosaic crystalline tiles

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.

[1]  Paolo Valente,et al.  Deflection of 400 GeV/c proton beam with bent silicon crystals at the CERN Super Proton Synchrotron , 2008 .

[2]  Hubert Halloin,et al.  Laue diffraction lenses for astrophysics: Theoretical concepts , 2006 .

[3]  C. Malgrange.  X-ray Propagation in Distorted Crystals: From Dynamical to Kinematical Theory , 2002 .

[4]  Alessandro Pisa,et al.  Optical properties of Laue lenses for hard X-rays (>60 keV) , 2005 .

[5]  A. Authier.  Dynamical theory of x-ray diffraction , 2001 .

[6]  M. Melchiorri,et al.  Laue lens development for hard X-rays (>60 keV) , 2006, IEEE Transactions on Nuclear Science.

[7]  Vincenzo Guidi,et al.  High diffraction efficiency at hard X-ray energy in a silicon crystal bent by indentation , 2010 .

[8]  A. Petrunin,et al.  Observation of the elastic quasi-mosaicity effect in bent silicon single crystals , 2005 .

[9]  Paolo Valente,et al.  High-efficiency volume reflection of an ultrarelativistic proton beam with a bent silicon crystal. , 2007, Physical review letters.

[10]  M. Jentschel,et al.  R and D progress on second-generation crystals for Laue lens applications , 2007, SPIE Optical Engineering + Applications.

[11]  W. Zachariasen,et al.  Theory of X-Ray Diffraction in Crystals , 1968 .

[12]  Robert K. Smither,et al.  High diffraction efficiency, broadband, diffraction crystals for use in crystal diffraction lenses , 2005 .

[13]  J. V. Kuo,et al.  Development of a new photon diffraction imaging system for diagnostic nuclear medicine , 2006 .

[14]  Vincenzo Guidi,et al.  Self-standing bent silicon crystals for very high efficiency Laue lens , 2011 .