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Development of picosecond time‐resolved X‐ray absorption spectroscopy by high‐repetition‐rate laser pump/X‐ray probe at Beijing Synchrotron Radiation Facility |
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| Authors: | Hao Wang Can Yu Xu Wei Zhenhua Gao Guang-Lei Xu Da-Rui Sun Zhenjie Li Yangfan Zhou Qiu-Ju Li Bing-Bing Zhang Jin-Qiang Xu Lin Wang Yan Zhang Ying-Lei Tan Ye Tao |
| Institution: | 1. Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing100049, People's Republic of China;2. University of Chinese Academy of Sciences, 19B Yuquan Road, Beijing100049, People's Republic of China;3. Accelerator Division, Institute of High Energy Physics, Chinese Academy of Sciences, 19B Yuquan Road, Beijing100049, People's Republic of China |
| Abstract: | 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. |
| Keywords: | laser pump/X‐ray probe X‐ray absorption spectroscopy high repetition rate |