forthcoming articles

Understanding the dynamic fluctuations of anisotropic particles is essential for elucidating the mechanisms of order formation through self-organization. Because anisotropic particles possess both translational and rotational degrees of freedom, their dynamics are intrinsically more complex than those of spherical particles. Time-resolved coherent X-ray scattering has the potential to probe such complex dynamics. Translational motion can be evaluated by X-ray photon correlation spectroscopy (XPCS), whereas orientational information can be extracted using the angular X-ray cross-correlation function (AXCCF). In this study, we investigated dynamic fluctuations in a colloidal nanorod system at concentrations near the coexistence region of isotropic and liquid-crystalline phases using time-resolved coherent X-ray scattering at 17.4 kHz. XPCS analysis revealed a pronounced slowing down of translational motion as the isotropic phase approached the liquid-crystalline phase. To examine possible temporal fluctuations in orientational order near the coexistence region, we applied a statistical approach based on AXCCF and principal component analysis (PCA). Temporal variations were indeed observed in the AXCCF. However, quantitative analysis showed that the magnitude and distribution of these variations are largely explained by photon-counting statistics expected for coherent scattering under low-count conditions. Although the present experiment did not provide definitive evidence for intrinsic orientational fluctuations beyond statistical noise, the analysis establishes an important framework for evaluating the detectability of orientational dynamics in time-resolved coherent X-ray scattering experiments and provides practical guidance for future measurements and validation.

A millisecond-resolution QXAFS platform has been established at SSRF BL11B for in situ and operando X-ray absorption studies. The platform demonstrates spectrum acquisition times down to 10 ms for XANES and 16.7 ms for full-range EXAFS, while quantitative analysis of finite-response and statistical limits indicates practically recommended monochromator oscillation frequencies of approximately 4 Hz for full-range EXAFS (~1000 eV scan window) and approximately 30 Hz for XANES (~130 eV scan window).

A wide field of view X-ray imaging detector was developed, and it was applied to wide-range X-ray multi-scale imaging to visualize a relatively large object from its entire structure to the cellular level.

The DanMAX beamline at the MAX IV laboratory is designed for in situ and in operando studies using powder X-ray diffraction, total scattering, and full-field imaging in the 15–35 keV energy range.

This paper presents a machine-learning-based approach for early fault detection in vacuum ion pumps at the European XFEL by analyzing pressure data to detect fault precursors. The developed method enables predictive maintenance, reducing unplanned downtime and improving operational reliability.

A high-resolution monochromator for the 8.41 keV ¹⁶⁹Tm nuclear resonance is presented enabling nuclear resonant scattering on Tm compounds at PETRA III beamline P01. Hyperfine parameters and phonon densities of states of metallic Tm and Tm₂O₃ are studied.