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
Automatic processing of multimodal tomography datasets
Multimodal chemical tomography is a technique that has to deal with a variety of big (>100 GB) datasets. Here, a novel method for approaching the analysis of such data using a Python-based big data solution is presented.
Miniature diamond anvils for X-ray Raman scattering spectroscopy experiments at high pressure
Limitations arise for the pressure range where high quality data can be recorded with X-ray Raman scattering spectroscopy. To overcome such issues, miniature diamond anvils of less than 500 µm thickness that can sustain pressure of 70 GPa with large opening enabling high scattering geometry have been developed. On beamline ID20 at the ESRF, data of unprecedented quality were collected on the silicon L-edge and oxygen K-edge in SiO2 glass up to 47 GPa.
OH cleavage from tyrosine: debunking a myth
A systematic macromolecular crystallography investigation into the observed electron density loss around the –OH group of tyrosines, as a function of dose at 100 K, is reported. It is concluded that a probable explanation is aromatic ring disordering as opposed to –OH cleavage; occurrence of the latter mechanism is a misconception perpetuated in radiation damage literature, and is unsupported by any observations in radiation chemistry.
Development of a dose-limiting data collection strategy for serial synchrotron rotation crystallography
The best practice for dose-limiting serial synchrotron rotation crystallography was examined through anomalous signal and single-wavelength anomalous diffraction phasing of mercury-bound luciferin regenerating enzyme. Sample rotation enabled accurate data collection with fewer diffraction images than without rotation, and an increase in resolution and anomalous signal was observed up to 3.4 MGy even though specific damage occurred after an accumulated dose of 1.1 MGy.
X-ray fluorescence at nanoscale resolution for multicomponent layered structures: a solar cell case study
The study of multilayer stacks (e.g. thin-film solar cells) by X-ray fluorescence requires a thorough account of the depth-dependent attenuation of incident and excident X-ray beam intensity, as well as spatial thickness variations to achieve an accurate interpretation of the data. A procedure is presented that allows for the assessment of stoichiometric composition variations in high spatial resolution imaging by correcting for multiple effects.