Open AccessDispersion and monochromatization of x-rays using a beryllium prism
Author(s) -
Matthias Burza,
Henrik Enquist,
Andrius Jurgilaitis,
Jesper Nygaard,
Jörgen Larsson
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.000620
Subject(s) - optics , undulator , beryllium , prism , harmonics , beamline , dispersion (optics) , physics , refraction , cuboid , beam (structure) , materials science , geometry , mathematics , quantum mechanics , voltage , nuclear physics
We demonstrate experimentally and numerically that an x-ray prism made of beryllium can be used to disperse and monochromatize x-rays. A polished beryllium cuboid was employed as refractive and dispersive optics. The results of a proof-of-principle experiment and methods of performance optimization are presented. The spatial separation of undulator harmonics and their subsequent selection using a slit are described. A numerical study, assuming realistic beam and beamline parameters, suggests that undulator harmonics can be spatially separated in the range from 3 keV to beyond 20 keV, while maintaining throughput above 50%. Refractive optics is particularly suitable for low-repetition-rate sources such as free-electron lasers and other LINAC-based short-pulse sources.