Open AccessRefraction and ultra‐small‐angle scattering of X‐rays in a single‐crystal diamond compound refractive lens
Author(s) -
Gasilov S.,
Mittone A.,
dos Santos Rolo T.,
Polyakov S.,
Zholudev S.,
Terentyev S.,
Blank V.,
Bravin A.,
Baumbach T.
Publication year - 2017
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577517012772
Subject(s) - optics , lens (geology) , wavefront , refraction , materials science , scattering , diamond , forward scatter , refractive index , beam (structure) , physics , composite material
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.