Experimental Determination of the Melting Temperature and Structure of Carbon and Fe-compounds at High Pressure

该项目是以前研究的延续 美国国家科学基金会资助的EAR 85 -18138关于高压 熔融行为和结构的实验研究 地球材料的淬火熔化物。 压力温度 条件达到300帕和6000>K是通过聚焦 在金刚石砧高压室中激光加热样品。 样品温度由连续光谱法测定 热发射率分析;压力由 红宝石荧光技术 项目的具体目标 包括完成以下物质的熔解曲线的测定： 高压下的碳和熔化研究的开始 (mg，Fe）O和（Mg，Fe）SiO 3（钙钛矿）。 的结果予以 研究将提供有关行为的重要信息， 地球材料的淬火熔化物。

This project represents a continuation of research previously supported by NSF grant EAR85-18138 concerning high-pressure experimental studies of the melting behavior and structure of quenched melts of Earth materials. Pressure-temperature conditions up to 300 kilobars and 6000>K are achieved by focussed laser heating of samples in a diamond-anvil high pressure cell. Sample temperatures are determined by continuous-spectrum analysis of thermal emissivity; pressure is determined by the ruby-fluorescence technique. Specific objectives of the project include completion of the determination of the melting curve of carbon at high pressure and initiation of melting studies of (mg,Fe)O and (Mg,Fe)SiO3 (perovskite). The results of these studies will provide important information on the behavior of quenched melts of Earth materials.