Interaction of iron with davemaoite at conditions of the Earth’s lower mantle and core mantle boundary

The aim of the project is to investigate the effect of iron on the chemical stability of calcium silicate perovskite (CaSiO3) in situ at conditions relevant to the Earth’s lower mantle using powder and single-crystal X-ray diffraction (scXRD) and Synchrotron Mössbauer Source (SMS) at pressures 30 – 130 GPa and temperatures 1800 K – 2500 K.

本项目旨在借助粉末与单晶X射线衍射（single-crystal X-ray diffraction，scXRD）及同步辐射穆斯堡尔源（Synchrotron Mössbauer Source，SMS），在与地球下地幔相关的温压条件下，原位探究铁对硅酸钙钙钛矿（CaSiO3）化学稳定性的影响，实验所采用的压力范围为30~130吉帕（GPa），温度范围为1800~2500开尔文（K）。