Experimental Astronomy

, Volume 20, Issue 1–3, pp 151–170 | Cite as

Laue diffraction lenses for astrophysics: Theoretical concepts

  • Hubert HalloinEmail author
  • Pierre Bastie
Original Article


Beyond the present technologies, Laue diffraction lenses are very promising tools in the field of gamma-ray astrophysics. The theoretical concepts of this kind of instruments are based on the Laue diffraction in crystals, discovered almost 100 years ago. Though they are commonly used in crystallography, their application to γ-ray focusing in astrophysics requires some specific developments, e.g. in terms of energy and imaging responses. The present article describes the physics of X-ray diffraction in crystals. In the context of the Darwin model of mosaic crystals, some peculiar aspects, relevant to the astrophysical observation, are discussed. The evaluation and optimization of diffraction efficiency are discussed, especially with rigards to the crystal’s mosaicity and thickness, its spatial extent and deviations to the “ideally imperfect” Darwin model.


Focusing optics Gamma-ray astrophysics Crystal diffraction 


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Copyright information

© Springer Science + Business Media B.V. 2006

Authors and Affiliations

  1. 1.CESRToulouseFrance
  2. 2.APCParis Cedex 05France
  3. 3.Laboratoire de Spectrométric PhysiqueMartin d’Hères CedexFrance
  4. 4.ILLGrenoble Cedex 9France

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