A Paris-Edinburgh Cell for High-Pressure and High-Temperature Structure Studies on Silicate Liquids Using Monochromatic Synchrotron Radiation
A Paris-Edinburgh Cell for High-Pressure and High-Temperature Structure Studies on Silicate Liquids Using Monochromatic Synchrotron Radiation
复制标题
使用单色同步辐射对硅酸盐液体进行高压高温结构研究的巴黎-爱丁堡室
DOI：
10.3390/min9110715
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发表时间：
2019
期刊：
影响因子：
2.5
通讯作者：
Yanbin Wang
中科院分区：
文献类型：
--
作者：
Tony Yu;C. Prescher;Y. Ryu;F. Shi;E. Greenberg;V. Prakapenka;P. Eng;J. Stubbs;Y. Kono;G. Shen;H. Watson;M. Rivers;S. Sutton;Yanbin Wang
在GeoSoilEnviro高级辐射源中心（GSECARS）光束线上，一台巴黎-爱丁堡印刷机与多通道准直器组件相结合，用于单色X射线散射，重点是研究低Z液体，特别是高压下的硅酸盐液体。Paris-Edinburgh压力机安装在一台通用衍射仪上，探测器臂上安装有一个像素阵列探测器。能量高达60 keV的入射单色波荡器光束在水平和垂直方向上聚焦，光束尺寸约为30 × 30 µm。通过这种设置，对于直径大于1.05 mm的样品，在大于10°的2θ角处完全去除了来自周围压力介质的背景散射。三十分钟通常足以从1.6mm直径的无定形硅酸盐样品收集稳健的X射线散射信号。标准的巴黎-爱丁堡砧的电池组件已经开发和压力和温度高达7 GPa和2300 K，分别已保持稳定超过小时。我们还开发了杯形环形Drickamer砧，以进一步提高压力和温度能力。杯状环形Drickamer砧结合了修改Drickamer砧和传统的巴黎-爱丁堡砧的功能。在高达2100 K的温度下产生了高达12 GPa的压力。
A Paris-Edinburgh press combined with a multi-channel collimator assembly has been commissioned at the GeoSoilEnviro Center for Advanced Radiation Sources (GSECARS) beamline for monochromatic X-ray scattering, with an emphasis on studying low-Z liquids, especially silicate liquids at high pressure. The Paris-Edinburgh press is mounted on a general-purpose diffractometer, with a pixel array detector mounted on the detector arm. The incident monochromatic undulator beam with energies up to 60 keV is focused both horizontally and vertically to a beam size about 30 × 30 µm. With this setup, background scattering from the surrounding pressure media is completely removed at 2θ angles above 10° for samples larger than 1.05 mm in diameter. Thirty minutes is typically sufficient to collect robust X-ray scattering signals from a 1.6 mm diameter amorphous silicate sample. Cell assemblies for the standard Paris-Edinburgh anvils have been developed and pressures and temperatures up to 7 GPa and 2300 K, respectively, have been maintained steadily over hours. We have also developed a cupped-toroidal Drickamer anvil to further increase pressure and temperature capabilities. The cupped-toroidal Drickamer anvil combines features of a modified Drickamer anvil and the traditional Paris-Edinburgh anvil. Pressures up to 12 GPa have been generated at temperatures up to 2100 K.