Refraction and ultra-small-angle scattering of X-rays in a single-crystal diamond compound refractive lens.
JOURNAL OF SYNCHROTRON RADIATION 2017;
24:1137-1145. [PMID:
29091056 DOI:
10.1107/s1600577517012772]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 09/06/2017] [Indexed: 06/07/2023]
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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