Shen Guoyin, Prakapenka Vitali B, Eng Peter J, Rivers Mark L, Sutton Stephen R
Center for Advanced Radiation Sources, University of Chicago, Chicago, IL 60637, USA.
J Synchrotron Radiat. 2005 Sep;12(Pt 5):642-9. doi: 10.1107/S0909049505022442. Epub 2005 Aug 16.
An overview of facilities for high-pressure research with the diamond anvil cell (DAC) at the GeoSoilEnviroCARS (GSECARS) sector at the Advanced Photon Source (Argonne, Illinois) is presented. There are three operational experimental stations (13-ID-C, 13-ID-D and 13-BM-D) where DAC instrumentation is installed for various types of experiments at high pressure and extreme temperature conditions. A fourth station (13-BM-C) is under construction and will be operational in 2006. While most X-ray diffraction experiments have been undertaken with powder samples so far, there is a growing demand for single-crystal diffraction (SCD) at high pressure. As one of the principal components at GSECARS, SCD is currently under rapid development. Other relevant techniques have also been developed for obtaining complementary information from powder or single-crystal samples at high pressure. For example, an on-line Brillouin system is installed and operational at 13-BM-D for acoustic velocity and single-crystal elasticity determinations. In addition, various X-ray spectroscopy techniques (e.g. X-ray emission and X-ray Raman) are employed for measuring electronic and magnetic properties. Future developments are discussed with the DAC program at GSECARS.
本文介绍了位于伊利诺伊州阿贡市先进光子源的地球土壤环境科学研究中心(GSECARS)部门利用金刚石对顶砧(DAC)进行高压研究的设施概况。有三个正在运行的实验站(13-ID-C、13-ID-D和13-BM-D),在这些实验站安装了DAC仪器,用于在高压和极端温度条件下进行各种类型的实验。第四个实验站(13-BM-C)正在建设中,将于2006年投入使用。虽然到目前为止大多数X射线衍射实验都是用粉末样品进行的,但对高压下单晶衍射(SCD)的需求正在不断增长。作为GSECARS的主要组成部分之一,SCD目前正在迅速发展。还开发了其他相关技术,用于从高压下的粉末或单晶样品中获取补充信息。例如,在13-BM-D安装并运行了一个在线布里渊系统,用于测定声速和单晶弹性。此外,还采用了各种X射线光谱技术(如X射线发射和X射线拉曼)来测量电子和磁性特性。文中还讨论了GSECARS的DAC计划的未来发展。