摘要
同步辐射光源具有宽光谱、高亮度、高准直等优异性能,被广泛地用于高压科学研究。在依托同步辐射光源所发展的诸多高压研究手段中,X射线衍射是最基本的也是应用最多的实验技术之一。本文简单介绍了同步辐射光的独特性能和光源的基本构成,以及同步辐射光束线和实验站的基本概念。针对基于金刚石对顶砧(DAC)的高压X射线衍射技术,阐述了多种测试方法的原理和应用,包括粉末衍射、单晶衍射、多晶衍射、径向衍射、激光加温衍射以及快速加载衍射等。对北京同步辐射装置(BSRF)4W2高压衍射线站所提供的同步辐射光品质、X射线微聚焦能力、多种衍射方法以及新近发展的实验技术进行了较详细的描述,并展望了高能同步辐射光源(HEPS)的建设给高压科学研究带来的机遇。
Synchrotron radiation source can offer wide-spectrum,high-energy,high-brightness,and lowemittance,which has been widely used in high pressure research.Among the X-ray techniques,the X-ray diffraction is one of the most basic and widely used experimental techniques,and is likely to remain the dominant application for high-pressure research in the future.Here the unique properties of synchrotron radiation,the basic composition of the light source,and the concepts of beam lines and experimental stations are briefly introduced.The high-pressure X-ray diffraction based on diamond anvil cells is focused.Various diffraction methods are explained,including powder diffraction,single X-ray diffraction and radial X-ray diffraction,as well as the combination with the laser heating and fast loading techniques.The equipment configuration and the capabilities of the high-pressure beamline at the Beijing Synchrotron Radiation Facility(BSRF)are also described,including the quality of radiation from 4W2 wiggler,X-ray micro-focusing,various diffraction methods and newly developed techniques.At last the opportunities brought by the construction of High Energy Photon Source(HEPS)for high pressure research are prospected.
作者
刘景
LIU Jing(Institute of High Energy Physics,CAS,Beijing 100049,China)
出处
《高压物理学报》
EI
CAS
CSCD
北大核心
2020年第5期27-46,共20页
Chinese Journal of High Pressure Physics
基金
国家自然科学基金(U1530134,10875142,11075175)
中国科学院知识创新重要方向项目(KJCX2-SW-N20,KJCX2-SW-N03)
中国科学院大型科研装备研制项目(SYGNS04)。
关键词
高压
X射线衍射
同步辐射
DAC
high pressure
X-ray diffraction
synchrotron radiation
diamond anvil cell
作者简介
刘景(1950-),女,本科,研究员,主要从事同步辐射高压实验技术及其应用研究.E-mail:Liuj@ihep.ac.cn。
