Acquisition of a Carbon Dioxide Laser and a Nd-YLF Laser

在PI的指导下，芝加哥大学将获得一个钕钇氟化镧（Nd-YLF）和二氧化碳激光器，相关的稳定设备，新的金刚石砧细胞和高压气体加载装置。该设备将使该大学的金刚石砧实验室现代化，并对其进行许多必要的改进，以研究高温高压矿物物理。PI的研究重点是精确测量地幔和地核矿物的熔融曲线，以约束下地幔的最高温度和内核内外边界的温度，这是地球科学的一个基本问题。特别是，获得稳定的高功率Nd-YLF激光器将能够检测激光加热金刚石砧中地球材料的聚变焓。CO2激光器的获得将使该实验室能够使用两种类型的激光器进行熔化测量，以便在实验室内部和实验室之间进行比较，以解决这些差异。由于激光以不同的方式与固体耦合，因此可以研究的材料类型大大增加了两种类型的激光器。最后，由于新激光器的稳定性，它将有可能与目前在阿贡国家实验室先进光子源（APS）的先进辐射源联盟（CARS）部门委托的同步加速器源接口。＊＊＊

9508054 Heinz Under the direction of the PI, the University of Chicago will acquire a neodymium-yttrium lanthanum fluoride (Nd-YLF) and C02 lasers, associated stabilization equipment, new diamond anvil cells and a high pressure gas loading apparatus. This equipment will both modernize and add many necessary improvements to the diamond anvil laboratory at the University for research in high temperature, high pressure mineral physics. The PI's research focuses on the accurate measurement of melting curves for mantle and core minerals so as to constrain the maximum temperature of the lower mantle and the temperature of the inner-outer core boundary, a fundamental problem in the earth sciences. In particular, the acquisition of a stable high power Nd-YLF laser will enable detection of the enthalpy of fusion for Earth materials in the laser-heated diamond anvils. The acquisition of the CO2 laser will enable this laboratory to make melting measurements with bmth types of laser for intra and inter-laboratory comparisons with the goal of resolving these differences. Since the lasers couple with solids in different ways, the types of materials that can be studied is greatly increased by having both types of lasers. Finally, due to the stability of the new lasers, it will be possible to interface with the synchrotron source currently being commissioned at the Consortium for Advanced Radiation Sources (CARS) sector of the Advanced Photon Source (APS), Argonne National Laboratory. ***