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Preview: Forthcoming in Journal of Synchrotron Radiation

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



 












Accuracy of stress measurement by Laue micro­diffraction (Laue-DIC method): the influence of image noise, calibration errors and spot number
The treatment of Laue microdiffraction images for stress analysis in deformed specimens can be improved by using digital image correlation techniques, thereby resulting in the so-called Laue microdiffraction (Laue-DIC) method. This method has demonstrated better performance than traditional methods in previous studies. In this work, two sources of errors affecting the accuracy of Laue-DIC, i.e. image noise and calibration errors, are identified, and their collective effect along with the influence of the number of spots recorded are assessed by Monte Carlo simulation.



In situ electrochemical high-energy X-ray diffraction using a capillary working electrode cell geometry
An electrochemical cell design for in situ high-energy X-ray diffraction which provides an order of magnitude signal enhancement over traditional cell designs is presented. Various examples illustrate improved diffraction signal and cell operation.



A method to stabilize the incident X-ray energy for anomalous diffraction measurements
A method to stabilize the incident X-ray energy employing the absorption edges of heavy elements is provided. This method can be routinely utilized for anomalous diffraction or scattering data collection where energy stability is highly demanded.



Insight into growth of Au–Pt bimetallic nanoparticles: an in situ XAS study
Simultaneous in situ XAS measurements have been carried out at Au and Pt L3-edges in order to gain insight into the growth mechanism of Au–Pt core shell nanoparticles.



Potential of propagation-based synchrotron X-ray phase-contrast computed tomography for cardiac tissue engineering
The development of three-dimensional quantitative imaging of hydro­gel cardiac implants is a strategic priority for longitudinal studies of cardiac tissue engineering, yet remains to be achieved. Here, by optimizing the imaging parameters, propagation-based phase-contrast computed tomography has been shown to offer great potential for three-dimensional visualization of microstructural features of hydro­gel cardiac implants.



Effects of temperature, mechanical motion and source positional jitter on the resolving power of beamline 02B at the SSRF
Analytical expressions are derived for output X-ray beam energy shifts caused by temperature variation, mechanical motion and vibration, and source positional fluctuations on a soft X-ray beamline using a variable-line-spacing grating monochromator. Measured spectra confirm an acceptable energy-resolving power for experimental requirements.



Using refractive optics to broaden the focus of an X-ray mirror
Refractive optical elements for X-rays that vary the size of the focal spot of an X-ray mirror are reported.



Alternative difference analysis scheme combining R-space EXAFS fit with global optimization XANES fit for X-ray transient absorption spectroscopy
A difference analysis scheme has been developed for time-resolved X-ray absorption spectroscopy. It combines the R-space difference EXAFS fit with the difference XANES fit, characterized by changeable calculation core and global optimization algorithm. It has been applied to a photo-excited spin crossover iron complex.



Comparison of phantom materials for use in quality assurance of microbeam radiation therapy
Solid phantoms that are routinely used in quality assurance (QA) of conventional megavoltage X-ray beam radiation therapy may not be designed for use in synchrotron-based microbeam radiation therapy (MRT). This work quantitatively determines the most appropriate solid phantom to use in dosimetric MRT QA using Geant4-based Monte Carlo simulations.