title: Three Dimensional Variable-Wavelength X-Ray Bragg Coherent Diffraction Imaging.
abstract: We present and demonstrate a formalism by which three-dimensional (3D) Bragg x-ray coherent diffraction imaging (BCDI) can be implemented without moving the sample by scanning the energy of the incident x-ray beam. This capability is made possible by introducing a 3D Fourier transform that accounts for x-ray wavelength variability. We demonstrate the approach by inverting coherent Bragg diffraction patterns from a gold nanocrystal measured with an x-ray energy scan. Variable-wavelength BCDI will expand the breadth of feasible in situ 3D strain imaging experiments towards more diverse materials environments, especially where sample manipulation is difficult.
authors.affiliation: Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: W
authors.initials: W
authors.lastname: Cha
authors.affiliation: Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: A
authors.initials: A
authors.lastname: Ulvestad
authors.affiliation: Aix-Marseille University, CNRS, Centrale Marseille, Institut Fresnel, 13013 Marseille, France.
authors.forename: M
authors.initials: M
authors.lastname: Allain
authors.affiliation: Aix-Marseille University, CNRS, Centrale Marseille, Institut Fresnel, 13013 Marseille, France.
authors.forename: V
authors.initials: V
authors.lastname: Chamard
authors.affiliation: X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: R
authors.initials: R
authors.lastname: Harder
authors.affiliation: ESRF-The European Synchrotron, CS 40220, 38043 Grenoble Cedex 9, France.
authors.forename: S J
authors.initials: SJ
authors.lastname: Leake
authors.affiliation: X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: J
authors.initials: J
authors.lastname: Maser
authors.affiliation: Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: P H
authors.initials: PH
authors.lastname: Fuoss
authors.affiliation: Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: S O
authors.initials: SO
authors.lastname: Hruszkewycz