Refraction and ultra‐small‐angle scattering of X‐rays in a single‐crystal diamond compound refractive lens |
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| Authors: | S Gasilov A Mittone T dos Santos Rolo S Polyakov S Zholudev S Terentyev V Blank A Bravin T Baumbach |
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| Affiliation: | 1. Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology (KIT), Eggenstein, Germany;2. European Synchrotron Radiation Facility, Grenoble, France;3. Technological Institute for Superhard and Novel Carbon Materials, Troitsk, Russian Federation;4. Laboratory for Applications of Synchrotron Radiation, Faculty of Physics, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany |
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| Abstract: | In this work a double‐crystal setup is employed to study compound refractive lenses made of single‐crystal diamond. The point spread function of the lens is calculated taking into account the lens transmission, the wavefront aberrations, and the ultra‐small‐angle broadening of the X‐ray beam. It is shown that, similarly to the wavefront aberrations, the ultra‐small‐angle scattering effects can significantly reduce the intensity gain and increase the focal spot size. The suggested approach can be particularly useful for the characterization of refractive X‐ray lenses composed of many tens of unit lenses. |
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| Keywords: | compound refractive lens single‐crystal diamond aberrations ultra‐small angle X‐ray scattering rocking‐curve imaging |
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