X-ray diffraction performance of thermally distorted crystals

Yang，Chuan1,2; Liu，Tao3; Hu，Kai1; Zhu，Ye1; Dong，Xiaohao3; Xu，Zhongmin1; Feng，Chao3; Zhang，Weiqing1,4

2023

10.1017/hpl.2023.56

High Power Laser Science and Engineering   Impact Factor & Quartile

2095-4719

2052-3289

The development of high brightness X-ray free electron laser (XFEL), such as hard X-ray self-seeding FEL and XFEL oscillator (XFELO), brings a severe challenge to the crystal monochromator due to strong non-uniform thermal load. The distortion caused by spatial temperature gradients can severely affect the optical performance of crystals. Therefore, this paper presents a model to estimate the performance of non-uniform thermally distorted crystals. The model not only takes into account thermal strain, slope error, and incident angle deviation but also considers temperature-dependent factors such as the Debye-Waller factor and electric susceptibility. Our investigation indicates that the Debye-Waller factor reduces the height and bandwidth of rocking curves and the impact of the electric susceptibility is tiny. The proposed model can describe the distortion of the reflectivity and transmissivity curves of non-uniform thermally loaded crystals and can be applied in the design of crystal monochromators, crystal splitters, crystal compressors, and XFELOs.

crystal monochromator free electron laser thermal load X-ray diffraction

SCI

English

Corresponding

This research was funded by the National Natural Science Foundation of China (Grant No. 12005135 and 22288201), the National Key Ramp;D Program of China (Grant No. 2018YFE0203000) and the Scientific Instrument Developing Project of the Chinese Academy of["12005135","22288201"] ; National Natural Science Foundation of China[2018YFE0203000] ; National Key Ramp;D Program of China[GJJSTD20190002]

Optics

Optics

WOS:001083287600001

CHINESE LASER PRESS & CAMBRIDGE UNIV PRESS

2-s2.0-85165072460

Scopus

1.Institute of Advanced Science Facilities,Shenzhen,518107,China
2.College of Science,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
3.Shanghai Advanced Research Institute,Chinese Academy of Science,Shanghai,201210,China
4.State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,116023,China

Yang，Chuan,Liu，Tao,Hu，Kai,et al. X-ray diffraction performance of thermally distorted crystals[J]. High Power Laser Science and Engineering,2023,11.

Yang，Chuan.,Liu，Tao.,Hu，Kai.,Zhu，Ye.,Dong，Xiaohao.,...&Zhang，Weiqing.(2023).X-ray diffraction performance of thermally distorted crystals.High Power Laser Science and Engineering,11.

Yang，Chuan,et al."X-ray diffraction performance of thermally distorted crystals".High Power Laser Science and Engineering 11(2023).