Nuclear Techniques ›› 2017, Vol. 40 ›› Issue (10): 100101-100101.doi: 10.11889/j.0253-3219.2017.hjs.40.100101


Ultrafast X-ray diffraction development at high repetition rate in Beijing Synchrotron Radiation Facility

WEI Xu1,2, ZHANG Bingbing1, SUN Darui1, TAO Ye1, YU Can1,2, WANG Hao1,2   

  1. 1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-05-03 Revised:2017-06-13 Online:2017-10-10 Published:2017-09-29
  • Supported by:
    Supported by the High Energy Photon Source-Test Facility Program and National Natural Science Foundation of China (No.U1332205)

Abstract: Background: Time-resolved experiments could provide a dynamical insight into the structure of materials. The ultrafast X-ray diffraction (UXRD) technique is a common way in time-resolved experiment with the laser pump and the X-ray probe method. Purpose: This study aims to perform the UXRD experiments with the high repetition rate pump laser. Methods: A picosecond resolution UXRD setup on high repetition rate laser pump at Beijing Synchrotron Radiation Facility (BSRF) was built and a test with the sample SrRuO3 (SRO) grown on the substrate SrTiO3 (STO) was performed at the repetition rate of 310 kHz. Some exploratory experiments on the static heating problem accompanied by high repetition rate photoexcitation were discussed briefly. Results: Compared with the previous 1-kHz repetition rate measurement, the signal to noise ratio (SNR) of those at 310 kHz was improved dramatically. And a cooling system was necessary for the overheating problem. Conclusion: Those UXRD experiments at BSRF were performed at high repetition rate, which laid a foundation for the future work.

Key words: UXRD, High repetition rates, SRO/STO, Structural dynamics

CLC Number: 

  • O434.19