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

Xu WEI; Bingbing ZHANG; Darui SUN; Ye TAO; Can YU; Hao WANG

doi:10.11889/j.0253-3219.2017.hjs.40.100101

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

SYNCHROTRON RADIATION TECHNOLOGY AND APPLICATIONS | 更新时间：2021-05-19

- Ultrafast X-ray diffraction development at high repetition rate in Beijing Synchrotron Radiation Facility
  封面论文
- NUCLEAR TECHNIQUES Vol. 40, Issue 10, Article number: 100101(2017)
- 作者机构：
  
  1.中国科学院高能物理研究所北京 100049
  2.中国科学院大学北京 100049
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China
- DOI：10.11889/j.0253-3219.2017.hjs.40.100101
  CLC： O434.19;O436.1;TL594;O722
- Received：03 May 2017，
  
  Revised：13 June 2017，
  
  Published：2017-10
- 稿件说明：
移动端阅览
Xu WEI, Bingbing ZHANG, Darui SUN, et al. Ultrafast X-ray diffraction development at high repetition rate in Beijing Synchrotron Radiation Facility[J]. Nuclear techniques, 2017, 40(10): 100101
DOI：

Xu WEI, Bingbing ZHANG, Darui SUN, et al. Ultrafast X-ray diffraction development at high repetition rate in Beijing Synchrotron Radiation Facility[J]. Nuclear techniques, 2017, 40(10): 100101 DOI： 10.11889/j.0253-3219.2017.hjs.40.100101.

摘要

基于北京同步辐射装置（Beijing Synchrotron Radiation Facility，BSRF）发展了具有皮秒分辨率的高重复频率超快X射线衍射（Ultrafast X-ray Diffraction，UXRD）技术。在重复频率310 kHz下开展了SrRuO

（SRO）/SrTiO

（STO）薄膜样品的超快X射线衍射实验，获得了高质量实验数据，与重复频率为1 kHz的实验相比，信噪比（Signal to Noise Ratio，SNR）有了明显的提高。但是，高重复频率泵浦激光也导致了静态加热问题更加明显，对此进行了分析，给出了实验设计指导意见。

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 SrRuO

(SRO) grown on the substrate SrTiO

(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.

关键词

Keywords

references

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