試料ガス雰囲気サブ秒放射光粉末回折計測システムの開発

抄録

High-resolution X-ray powder diffraction measurement system with temporal resolution of sub-second under controlled gas and vapor atmospheres at BL02B2 of SPring-8 was developed to study structural change processes in gas storage and reaction materials. The measurement system mainly consists of a six one-dimensional solid-state detectors, a sample changer, a gas cell for a capillary sample, and a remote gas handling system. This system is not only capable of fast powder diffraction measurement, but also of automatic measurement even at extremely low gas pressures. The acquisition of powder diffraction data can be synchronized with the control of the pressure with a high frame rate of up to 100 Hz. Using this developed system, structural transition of nanoporous Cu coordination polymer under various gas adsorption processes were be observed on the sub-second time scale.