分类： 物理学 >> 核物理学 提交时间： 2025-04-25
Shi, Dr. Caijuan
Yang, Dr. Dongliang
Zheng, Dr. Lirong
Yang, Dr. Yiming
Zhang, Dr. Fei
Zhang, Dr. Bingbing
Li, Prof. Xiaodong
摘要： As a powerful probe for local structure analysis, high energy X-ray total scattering method has been used widely in condensed matter physics, materials science and other fields. With a super-conducting wiggler (SCW) and sagittal focusing monochromator, a high energy X-ray total scattering apparatus has been developed at 3W1 beamline of Beijing Synchrotron Radiation Facility, BSRF, a first-generation synchrotron source. The total scattering apparatus mainly consists of a large two-dimensional flat-panel detector and high-energy X-rays of 50-70 keV, enabling total scattering measurements to be carried out for pair distribution function (PDF) analysis with a Q range of 0.5-25 A-1. Based on this apparatus, a series of in-situ devices were developed, data with good signal noise ratio were obtained and analyzed. Demonstration results for the observation of perovskite oxides with various A-site doping and bioactive glasses upon annealing were introduced. Notably, the PDF method can provide detailed local structural information of amorphous materials, liquids and structural disorder in crystalline materials. This work offers a guideline for people who considers to develop and use total scattering method at the other synchrotron facility.
分类： 物理学 >> 核物理学 提交时间： 2025-03-05
Shi, Dr. Caijuan
Yang, Dr. Dongliang
Zheng, Dr. Lirong
Yang, Dr. Yiming
Zhang, Dr. Fei
Zhang, Dr. Bingbing
Li, Prof. Xiaodong
摘要： As a powerful local structure probe, high energy X-ray total scattering method has been used widely in condensed matter physics, materials science and other fields. With a super-conducting wiggler (SCW) and sagittal focusing monochromator, a high energy X-ray total scattering apparatus has been developed at 3W1 beamline of Beijing Synchrotron Radiation Facility, BSRF, a first-generation synchrotron source. The total scattering apparatus mainly consists of a large two-dimensional flat-panel detector and high-energy X-rays of 50-70 keV, enabling total scattering measurements to be carried out for pair distribution function (PDF) analysis with a Q range of 0.5-25 Å-1. Based on this apparatus, a series of in-situ devices were developed, enabling the acquisition and analysis of data with a decent signal-to-noise ratio under various conditions. Demonstration results, including the observation of perovskite oxides with various A-site doping and bioactive glasses upon annealing, were presented. The practices outlined herein validated that the PDF method is capable of characterizing complex material structure at the atomic level. As synchrotron facilities continue to advance, this work stands as a critical source for fostering collaboration and driving progress in the field of scattering science.
分类： 物理学 >> 核物理学 提交时间： 2024-12-03
Shi, Dr. Caijuan
Yang, Dr. Dongliang
Zheng, Dr. Lirong
Yang, Dr. Yiming
Zhang, Dr. Fei
Zhang, Dr. Bingbing
Li, Prof. Xiaodong
摘要： As a powerful local structure probe, high energy X-ray total scattering method has been used widely in condensed matter physics, materials science and other fields. With a super-conducting wiggler (SCW) and sagittal focusing monochromator, a high energy X-ray total scattering apparatus has been developed at 3W1 beamline of Beijing Synchrotron Radiation Facility, BSRF, a first-generation synchrotron source. The total scattering apparatus mainly consists of a large two-dimensional flat-panel detector and high-energy X-rays of 50~70 keV, enabling total scattering measurements to be carried out for pair distribution function (PDF) analysis with a Q range of 0.5~25 Å−1. With this setup, a series of in-situ devices were developed, data with good signal noise ratio were obtained and analyzed. Demonstration results for the observation of perovskite oxides with various A-site doping and bioactive glasses upon annealing were introduced. Notably, the PDF method can provide detailed local structural information of amorphous materials, liquids and structural disorder in crystalline materials. This work offers a guideline for people who considers to develop and use total scattering method at the other synchrotron facility.
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