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Forthcoming article in Journal of Synchrotron Radiation



Synchrotron radiation research is rapidly expanding with many new sources of radiation being created globally. Synchrotron radiation plays a leading role in pure science and in emerging technologies. The Journal of Synchrotron Radiation provides comprehen



 



Characterization of a bent Laue double-crystal beam-expanding monochromator
A previously reported bent Laue double-crystal monochromator was found to have areas of missing intensity in the final X-ray beam. Measurements of the shape of the bent crystal wafers have been made using mechanical and diffraction methods to evaluate the crystal system and provide insight into potential methods of mitigating the non-uniformities in the beam.






X-ray beam-shaping via deformable mirrors: surface profile and point spread function computation for Gaussian beams using physical optics
We show in this paper a method to obtain the deformation profile to be imparted to an X-ray mirror in order to turn a Gaussian intensity distribution into any assigned point spread function, and how to easily check the result using physical optics.



Early commissioning results for spectroscopic X-ray Nano-Imaging Beamline BL 7C sXNI at PLS-II
The details and capabilities of a newly upgraded imaging beamline, 7C sXNI, are described for both high-resolution tomography and spectroscopic imaging.



GigaFRoST: the gigabit fast readout system for tomography
The GigaFRoST detector enables high acquisition rates and long scanning times for dynamic experiments.



The slip-and-slide algorithm: a refinement protocol for detector geometry
Geometry correction is performed with separation of Euclidean and non-Euclidean movements with respect to the sample, refined against independent target functions derived from the data. This leads to substantial improvements in indexing rates and data quality indicators and refines to convergence.






Enhancement of radiosensitivity of oral carcinoma cells by iodinated chlorin p6 copper complex in combination with synchrotron X-ray radiation
A novel radiosensitizer, iodinated chlorin p6 copper complex, led to an enhancement in the synchrotron X-ray radiation induced killing of oral cancer cells by augmentation of reactive oxygen species, lysosomal damage and inhibition of DNA repair.



The emerging role of 4D synchrotron X-ray micro-tomography for climate and fossil energy studies: five experiments showing the present capabilities at beamline 8.3.2 at the Advanced Light Source
Recent developments in in situ synchrotron X-ray micro-computed tomography allow novel time-resolved experiments. Five different dynamic micro-computed tomography experiments addressing carbon sequestration, permafrost evolution and unconventional oil recovery topics are presented.



Characterization of a sCMOS-based high-resolution imaging system
The detection system is a key part of any imaging station. Here the performance of the novel sCMOS-based detection system installed at the ID17 biomedical beamline of the European Synchrotron Radiation Facility and dedicated to high-resolution computed-tomography imaging is analysed.



Post-sample aperture for low background diffraction experiments at X-ray free-electron lasers
Diffraction experiments with weakly scattering samples often suffer from a low signal-to-noise ratio due to unwanted background scatter. Improving the signal-to-noise ratio for single-particle imaging experiments is particularly important as the diffraction signal is very weak. Here, a simple way to minimize the background scattering by placing an aperture downstream of the sample is demonstrated.



Simulations of Co-GISAXS during kinetic roughening of growth surfaces
Calculations and simulations are presented for the X-ray photon correlation spectroscopy signal expected for linear Kuramoto–Sivashinsky and non-linear Kardar–Parisi–Zhang surface growth processes.



Scanning X-ray diffraction on cardiac tissue: automatized data analysis and processing
An entire tissue slice of a mouse heart has been analyzed by scanning X-ray diffraction, using a micrometer spot sized beam and analyzed using an analysis toolbox that is provided for general use. In this way, variations of the local molecular structure parameters of the sarcomere, the basic structural unit of the myofibrils which make up muscle fibers, can be assessed, such as local orientation, strain and variation in filament lattice spacing.



A novel method for resonant inelastic soft X-ray scattering via photoelectron spectroscopy detection
A description of the concept and first test of a photoelectron-based method for measuring inelastic X-ray scattering is given.



Aberration-free aspherical lens shape for shortening the focal distance of an already convergent beam
The ideal lens surface for refocusing an already convergent beam is found to be one sheet of a Cartesian oval. This result is applied to the optimal construction of a compound refractive lens for X-ray nanofocusing.






The effect of self-consistent potentials on EXAFS analysis
The use of self-consistency in the computation of scattering potentials has scant impact on EXAFS analysis.



The 3D characteristics of post-traumatic syringomyelia in a rat model: a propagation-based synchrotron radiation microtomography study
The ability of synchrotron radiation phase-contrast microtomography to visualize the three-dimensional morphology of the spinal cord cavity induced by trauma is shown. It could be used as a reliable tool for tracking cavity formation and morphological changes in a post-traumatic syringomyelia animal model.



Design and performance of an X-ray scanning microscope at the Hard X-ray Nanoprobe beamline of NSLS-II
A multilayer Laue lenses based X-ray scanning microscope installed at the Nanoprobe beamline of the National Synchrotron Light Source II is described.