title: Interlaced X-ray diffraction computed tomography.
abstract: An X-ray diffraction computed tomography data-collection strategy that allows, post experiment, a choice between temporal and spatial resolution is reported. This strategy enables time-resolved studies on comparatively short timescales, or alternatively allows for improved spatial resolution if the system under study, or components within it, appear to be unchanging. The application of the method for studying an Mn-Na-W/SiO2fixed-bed reactorin situis demonstrated. Additionally, the opportunities to improve the data-collection strategy further, enabling post-collection tuning between statistical, temporal and spatial resolutions, are discussed. In principle, the interlaced scanning approach can also be applied to other pencil-beam tomographic techniques, like X-ray fluorescence computed tomography, X-ray absorption fine structure computed tomography, pair distribution function computed tomography and tomographic scanning transmission X-ray microscopy.
authors.affiliation: Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, England; Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Harwell, Oxfordshire OX11 0FA, England.
authors.forename: Antonios
authors.initials: A
authors.lastname: Vamvakeros
authors.affiliation: Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, England; Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Harwell, Oxfordshire OX11 0FA, England; School of Materials, University of Manchester, Manchester M13 9PL, England.
authors.forename: Simon D M
authors.initials: SD
authors.lastname: Jacques
authors.affiliation: ESRF - The European Synchrotron, Grenoble F-38000, France.
authors.forename: Marco
authors.initials: M
authors.lastname: Di Michiel
authors.affiliation: Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, England; Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Harwell, Oxfordshire OX11 0FA, England.
authors.forename: Pierre
authors.initials: P
authors.lastname: Senecal
authors.affiliation: Flemish Institute for Technological Research, VITO NV, Boeretang 200, 2400 Mol, Belgium.
authors.forename: Vesna
authors.initials: V
authors.lastname: Middelkoop
authors.affiliation: School of Materials, University of Manchester, Manchester M13 9PL, England.
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Cernik
authors.affiliation: Department of Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, England; Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Harwell, Oxfordshire OX11 0FA, England.
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Beale
keywords: X-ray diffraction computed tomography; XRD-CT; chemical tomography; hyperspectral tomography