Iron Phase Diagram at Extreme Conditions

Saxena，Surendra K.EAR-0074054这个项目是研究30到300 Gpa压力范围内铁的熔化和物理性质。新的数据将包括铁的熔化到地核的压力，压力-体积-温度测量(热膨胀和可压缩性作为温度的函数)以及铁的相变。研究人员将使用激光加热(双面)和外部加热的钻石顶锤单元，以实现压力和温度。这项研究将提供重要的实验数据，用于了解地核的热力学和动力学方面，并评估用于模拟地核和核幔边界温度-密度分布的热力学数据库。

Saxena, Surendra K. EAR-0074054This project is to study the melting and physical properties of iron in the pressure range of 30 to 300 GPa. The new data will consist of melting of iron to the pressure of Earth's core, pressure-volume-temperature measurements (thermal expansion and compressibility as a function of temperature) and phase transformations of iron. The investigators will use laser-heating (double-sided) and external heating of diamond-anvil cells to achieve the pressure and temperature. The study will provide important experimental data to be used in understanding the thermal and dynamic aspects of Earth's core and assessing the thermodynamic database for modeling the temperature-density profiles in the core and at the core-mantle boundary.