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Proceedings Paper

Focusing and energy dispersion properties of a cylindrically bent asymmetric Laue crystal
Author(s): Peng Qi; Xianbo Shi; Nazanin Samadi; Dean Chapman
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Paper Abstract

Elastically bent single crystal Laue case diffraction crystals provide interesting new opportunities for imaging and spectroscopy applications. The diffraction properties are well understood, however, the ability to easily model the diffracted beams hinders assessment of the focal, phase and energy dispersive properties needed for many applications. This work begins to collect the elements needed to ray trace diffracted beams within bent Laue crystals for the purpose of incorporation into other powerful ray tracing applications such as SHADOW. Specifically, we address the condition in a bent Laue crystal where a cylindrically bent Laue crystal will focus all the polychromatic diffracted beams at a single location when a specific asymmetry angle condition is met for a target x-ray energy – the so-called ‘magic condition’. The focal size of the beam can be minimized, but this condition also results in excellent energy dispersive properties. The conceptual and mathematical aspects of this interesting focusing and energy dispersive phenomenon is discussed.

Paper Details

Date Published: 9 September 2019
PDF: 9 pages
Proc. SPIE 11108, Advances in X-Ray/EUV Optics and Components XIV, 111080E (9 September 2019); doi: 10.1117/12.2525449
Show Author Affiliations
Peng Qi, Univ. of Saskatchewan (Canada)
Xianbo Shi, Argonne National Lab. (United States)
Nazanin Samadi, Univ. of Saskatchewan (Canada)
Canadian Light Source (Canada)
Dean Chapman, Canadian Light Source (Canada)
Univ. of Saskatchewan (Canada)

Published in SPIE Proceedings Vol. 11108:
Advances in X-Ray/EUV Optics and Components XIV
Ali M. Khounsary; Shunji Goto; Christian Morawe, Editor(s)

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