Development of picosecond time-resolved X-ray absorption spectroscopy by high-repetition-rate laser pump/X-ray probe at Beijing Synchrotron Radiation Facility

A new setup and commissioning of transient X-ray absorption spectroscopy are described, based on the high-repetition-rate laser pump/X-ray probe method, at the 1W2B wiggler beamline at the Beijing Synchrotron Radiation Facility. A high-repetition-rate and high-power laser is incorporated into the setup with in-house-built avalanche photodiodes as detectors. A simple acquisition scheme was applied to obtain laser-on and laser-off signals simultaneously. The capability of picosecond transient X-ray absorption spectroscopy measurement was demonstrated for a photo-induced spin-crossover iron complex in 6   mM solution with 155   kHz repetition rate.

Source: Journal of Synchrotron Radiation - March 20, 2017 Category: Physics Authors: Wang, H. Yu, C. Wei, X. Gao, Z. Xu, G.-L. Sun, D.-R. Li, Z. Zhou, Y. Li, Q.-J. Zhang, B.-B. Xu, J.-Q. Wang, L. Zhang, Y. Tan, Y.-L. Tao, Y. Tags: laser pump/X-ray probe X-ray absorption spectroscopy high repetition rate research papers Source Type: research