Development of Equipment for Ultrasonic Equation of State Measurements at High Pressure (4GPa) and High Temperature (1500K)

该项目将开发能够在静水压高达40千巴、温度高达1500K的情况下产生精确的高频(500 MHz)超声状态方程数据的新设备。根据密度和矿物相随深度分布的地球模型，需要这些数据来解释地震速度数据。该装置的设计将容纳直径不超过5毫米的地幔材料的固体样品。该系统将能够测量弹性常数及其压力和温度导数。

This project will develop new equipment capable of generating precise, high-frequency (500 MHz) ultrasonic equation of state data at hydrostatic pressures up to 40 kilobars and temperatures up to 1500K. The data are needed to interpret seismic velocity data in terms of Earth models of density and mineral phase distribution with depth. The apparatus will be designed to accommodate solid samples of mantle materials up to 5 mm in diameter. The system will enable the measurement of elastic constants and their pressure and temperature derivatives.