Upgrade of laser pump time-resolved X-ray probes in Beijing synchrotron

The upgrade of the laser pump time-resolved X-ray probes, namely time-resolved X-ray absorption spectroscopy (TR-XAS) and X-ray diffraction (TR-XRD), implemented at the Beijing Synchrotron Radiation Facility, is described. The improvements include a superbunch fill, a high-efficiency fluorescence collection, an efficient spatial overlap protocol and a new data-acquisition scheme. After upgrade, the adequate TR-XAS signal is now obtained in a 0.3   mM solution, compared with a 6   mM solution in our previous report. Furthermore, to extend application in photophysics, the TR-XAS probe is applied on SrCoO2.5 thin film. And for the first time, TR-XAS is combined with TR-XRD to simultaneously detect the kinetic trace of structural changes in thin   film.

Source: Journal of Synchrotron Radiation - October 21, 2019 Category: Physics Authors: Yu, C. Zhang, Y. Lei, G. Wang, H. Wang, Y.- Zhang, B.-B. Sun, D.-R. Zhao, J.-L. Zhou, Y.-F. Li, Q.-J. Gao, Z.- Zhan, F. Tao, Y. Tags: laser pump/X-ray probe time-resolved X-ray absorption spectroscopy time-resolved X-ray diffraction thin films beamlines Source Type: research