forthcoming articles

Performance of the new Finnish–Estonian Beamline for Atmospheric and Materials Sciences is characterized and discussed.

This work presents the first characterization of a thin organic semiconductor photodiode for dosimetry in Microbeam Radiation Therapy carried out at the Australian Synchrotron Imaging and Medical Beamline.

Compton scattering imaging has been applied to coin batteries to obtain their cross-sectional images directly.

A description of the upgraded bunch-by-bunch feedback system for time-resolved experiments at Pohang Light Source II (PLS-II) is provided. The project is part of the SPring-8 and PLS-II collaboration.

A feasible implementation of a novel X-ray detector for highly energetic X-ray photons with a large solid angle coverage, optimal for the detection of Compton X-ray scattered photons, is described. The device, consisting of a 20 cm-thick sensitive volume filled with xenon at atmospheric pressure, forms photoelectron images by resorting to the electroluminescence produced in a custom-made multi-hole acrylic structure. Photon-by-photon counting can be achieved by processing the resulting images, taken in a continuous readout mode. Based on Geant4 simulations, by considering a realistic detector design and response, it is shown that photon rates up to at least 10¹¹ ph/s on-sample (5 µm water-equivalent cell) can be processed, limited by the spatial diffusion of the photoelectrons in the gas. Illustratively, if making use of the Rose criterion and assuming the dose partitioning theorem, such a detector would allow obtaining 3 d images of 5 µm unstained cells in their native environment in about 24 h, with a resolution of 36 nm.

Exploitation of X-ray circular polarized beams to study forbidden Bragg reflections and new information that could be obtained in these experiments are discussed in the paper.

The development of instrumentation and software to support mail-in solution scattering is presented.

The design of a new high-throughput X-ray footprinting endstation and its application to footprinting experimental optimization is described.

PyPhase is a free and open-source Python package for propagation-based near-field phase reconstructions, which implements some of the most popular phase-retrieval algorithms in a highly modular framework supporting the deployment on large-scale computing facilities. This makes integration, development of new phase-retrieval algorithms, and the deployment on different computing infrastructures straightforward.

The method of X-ray footprinting mass spectrometry was used to investigate the effect of X-ray irradiation on various proteins in solution under both fully aerated and low dissolved oxygen conditions, and as a function of protein concentration.

X-ray ptychography was applied to assess the masses of human cell nuclei using phase shift information. A modified ptychography algorithm that improves the quality of the reconstruction for weak scattering samples was applied to calculate the mass of several human nuclei.

A system engineered to produce a large-scale structural change from X-ray-induced di­sulfide bond cleavage allows residue-specific changes to be interpreted with SAXS. This system is used to investigate how radical scavengers reduce bond breakage during data collection at 10°C with the results providing insight into mitigation strategies for crystallographic and solution experiments.