Open AccessUtilizing broadband X‐rays in a Bragg coherent X‐ray diffraction imaging experiment
Author(s) -
Cha Wonsuk,
Liu Wenjun,
Harder Ross,
Xu Ruqing,
Fuoss Paul H.,
Hruszkewycz Stephan O.
Publication year - 2016
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/s1600577516010523
Subject(s) - monochromatic color , optics , diffraction , coherent diffraction imaging , bragg's law , reciprocal lattice , beam (structure) , materials science , x ray crystallography , bragg peak , physics , phase retrieval , quantum mechanics , fourier transform
A method is presented to simplify Bragg coherent X‐ray diffraction imaging studies of complex heterogeneous crystalline materials with a two‐stage screening/imaging process that utilizes polychromatic and monochromatic coherent X‐rays and is compatible with in situ sample environments. Coherent white‐beam diffraction is used to identify an individual crystal particle or grain that displays desired properties within a larger population. A three‐dimensional reciprocal‐space map suitable for diffraction imaging is then measured for the Bragg peak of interest using a monochromatic beam energy scan that requires no sample motion, thus simplifying in situ chamber design. This approach was demonstrated with Au nanoparticles and will enable, for example, individual grains in a polycrystalline material of specific orientation to be selected, then imaged in three dimensions while under load.