Establishment of the pressure scale at high temperature and its application to seismic discontinuities in the Earth's interior

基于原位同步x射线衍射和高温高压超声声速测量、激波压缩实验以及分子动力学方法的计算机模拟，我们准确地得到了MgO、NaCl、Ar、Au和Pt的温度-压力-体积关系。此外，我们还成功地估计了地球过渡区、下地幔和地核上部温度为1000-3000 K和压力为20-150 GPa的可靠压力尺度。

We have obtained accurately the temperature-pressure-volume relations of MgO, NaCl, Ar, Au, and Pt, based on in situ synchrotron X-ray diffraction and ultrasonic sound velocity measurements at high temperatures and high pressures, shock compression experiments, and computer simulation using the molecular dynamics method. Furthermore, we have succeeded in estimating reliable pressure scales at temperatures 1000-3000 K and pressures 20-150 GPa, found in the Earth' transition region, lower mantle, and the upper part of the core.