Comparison of in vitro breast cancer visibility in analyser-based computed tomography with histopathology, mammography, computed tomography and magnetic resonance imaging

High-resolution analyser-based X-ray computed tomography findings on in vitro human breast cancer are compared with histopathology, mammography, X-ray computed tomography and magnetic resonance imaging.

Nanocomposite characterization on multiple length scales using µSAXS

Scanning microbeam small-angle X-ray scattering is used to characterize a thermoset resol/poly(isoprene-block-ethylene oxide) nanocomposite on multiple length scales with respect to homogeneity and microphase separation.

Measurement of angular distribution of soft X-ray radiation from thin targets in the tabletop storage ring MIRRORCLE-20SX

Measured angular distributions of the radiation from several different targets in the magnetic field of the 20 MeV storage ring MIRRORCLE-20SX are presented.

SHADOW3: a new version of the synchrotron X-ray optics modelling package

SHADOW3, a new version of the X-ray tracing code SHADOW, is introduced.

Automated sample-scanning methods for radiation damage mitigation and diffraction-based centering of macromolecular crystals

Two sample-scanning features have been implemented for the macromolecular crystallography beamlines at APS sector 23: automated diffraction-based rastering employing multiple polygon-shaped two-dimensional grids overlaid on a sample to locate and center small and invisible crystals or to find the best-diffracting regions in a larger crystal, and automated data collection along a three-dimensional vector to mitigate the effects of radiation damage.

Quantum critical point in SmO_1−xF_xFeAs and oxygen vacancy induced by high fluorine dopant

The local lattice and electronic structure of the high-T_c superconductor SmO_1–xF_xFeAs as a function of F-doping have been investigated by Sm L₃-edge X-ray absorption near-edge structure and multiple-scattering calculations.

The measurement of differential EXAFS modulated by high pressure

Differential EXAFS (DiffEXAFS) is able to detect subtle atomic perturbations in the local area of the absorbing atom. Here a new method of performing DiffEXAFS experiments under the modulation of high pressure has been developed.

Effects of alkyl side chains on properties of aliphatic amino acids probed using quantum chemical calculations

Side chain effects of amino acids are investigated using simulated ionization spectra in both valence and core spaces.

X-ray tomography of morphological changes after freeze/thaw in gas diffusion layers

Gas-diffusion-layer morphological changes by the freeze/thaw cycle are shown using X-ray tomography.

Two-dimensional approach to fluorescence yield XANES measurement using a silicon drift detector

Partial fluorescence yield XANES measurements were performed using a silicon drift detector in the soft X-ray region. This technique provides unambiguous XANES data in the soft X-ray region, where absorption edges of different elements are close to each other, or where fluorescence lines overlap.

In-line Bragg magnifier based on V-shaped germanium crystals

The design and experimental testing of the in-line Ge (220) Bragg magnifier used for full-field phase-contrast X-ray imaging are described.

Carbon contamination of soft X-ray beamlines: dramatic anti-reflection coating effects observed in the 1 keV photon energy region

When carbon contamination of beamline optics reaches thicknesses of several nanometres, strong reflectivity losses are observed in the 1 keV photon energy region.

European research platform IPANEMA at the SOLEIL synchrotron for ancient and historical materials

A description of the IPANEMA platform, a new European research platform devoted to ancient and historical materials at Synchrotron SOLEIL, is given.

Three-dimensional imaging of chemical phase transformations at the nanoscale with full-field transmission X-ray microscopy

Two-dimensional and three-dimensional single-pixel and single-voxel speciation of Ni in Li-ion battery electrodes is accomplished combining full-field hard X-ray transmission microscopy and XANES imaging at tens of nanometers resolution.

Radiation damage reveals promising interaction position

A bromide cleaved off an inhibitor owing to radiation damage was found to occupy an adjacent free volume using promising formerly unsatisfied interactions.

Microprobing the molecular spatial distribution and structural architecture of feed-type sorghum seed tissue (Sorghum Bicolor L.) using the synchrotron radiation infrared microspectroscopy technique

Synchrotron radiation infrared microspectroscopy is used to microprobe the molecular spatial distribution and structural architecture of the sorghum seed tissue.

Milli-electronvolt monochromatization of hard X-rays with a sapphire backscattering monochromator

Monochromatization of hard X-rays in the 20–40 keV energy range to ∼1 meV bandwidth using a sapphire backscattering monochromator is demonstrated.

Application of X-ray fluorescence to turbulent mixing

Measurements of the mixing of a gas jet are made using X-ray absorption and fluorescence to demonstrate the feasibility of X-ray fluorescence as a fluid flow diagnostic. The measurements demonstrate that X-ray fluorescence can provide a quantitative robust measure of fluid mixing in a flow with weak X-ray absorption.

Design of an anaerobic sample chamber for fluorescence measurements compatible with the Lytle detector

It is shown how a Stern–Heald detector can be modified to load multiple samples and measure them without changing the conditions inside the chamber. The details of the design of the chamber along with the parts needed to make it work successfully are provided.

Introduction to XAFS. A Practical Guide to X-ray Absorption Fine Structure Spectroscopy

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