Upgrade of High Pressure Mineral Physics Laboratory

0131874Smyth这笔赠款为科罗拉多大学地质科学系的高压X射线衍射和矿物物理研究实验室提供部分支持。该实验室目前包括一台西门子/布鲁克18kW旋转阳极X射线发生器、自动单晶和粉末衍射仪、激光红宝石荧光压力测量设备、用于晶体定向的X射线进动相机和三个Merrill-Bassett类型的金刚石压腔。该实验室与Hartmut Spetzler的团队在千兆赫兹超声干涉测量方面密切合作，对天然和合成高压矿物的X射线和超声波状态方程进行联合测量。旋转阳极发电机的升级包括新的钼阳极、备用涡轮泵、粗化泵以及真空阀和真空规。单晶衍射仪系统的升级包括一台控制计算机、Linux工作站和一些工资支助，以适应和安装新的衍射仪控制软件。粉末衍射系统的升级包括新的计算机和控制软件。激光压力测量设施的升级包括安全门联锁系统、计算机升级、双目显微镜和用于激光安全所需的新地下室实验室设施的光学工作台。高压金刚石顶座电池的升级包括两个新电池，一个四针铍座电池和一个大口径硬质合金座高温电池。样品制备设施的升级包括用于超声研究的定向多面单晶的制备工具，以及与位于德国拜罗伊特的拜尔里斯地质研究所的小组合作运行的高压合成制备设施。

0131874SmythThis grant provides partial support to upgrade the laboratory for high-pressure X-ray diffraction and mineral physics studies in the Department of Geological Sciences at the University of Colorado. The laboratory currently comprises a Siemens/Bruker 18KW rotating-anode X-ray generator, automated single-crystal and powder diffractometers, laser ruby fluorescence pressure measurement facility, X-ray precession cameras for crystal orientation, and three Merrill-Bassett type diamond anvil cells. The laboratory works in close collaboration with Hartmut Spetzler's group on Gigahertz Ultrasonic interferometry on combined X-ray and ultrasonic equation of state measurements of natural and synthetic high pressure minerals. The upgrade for the rotating-anode generator includes a new Mo anode, backup turbo pump, roughing pump, and vacuum valves and gauges. The upgrade for the single-crystal diffractometer system includes a control computer, LINUX workstation, and some salary support for adaptation and installation of new diffractometer control software. The upgrade of the powder diffraction system includes new computer and control software. The upgrade of the laser pressure measurement facility includes a safety door interlock system, computer upgrade, binocular microscope, and optical bench for a new basement lab facility required for laser safety. The upgrade of high-pressure diamond anvil cells includes two new cells, one four-pin Be seat cell and one wide-aperture carbide-seat high-temperature cell. The upgrade of the sample preparation facilities includes tools for preparation of oriented, faceted single crystals for ultrasonic studies, and facilities for preparation of high-pressure synthesis runs in collaboration with the group at Bayerisches Geoinstitut in Bayreuth, Germany.***