X-ray diffraction performance of thermally distorted crystals
|Corresponding Author||Yang，Chuan; Zhang，Weiqing|
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.
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]
|WOS Research Area|
|WOS Accession No|
Cited Times [WOS]:0
|Document Type||Journal Article|
|Department||College of Science|
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
|First Author Affilication||College of Science|
|Corresponding Author Affilication||College of Science|
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).
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