Hydrogen in the Earth’s core: Phase relations and density measurements at extreme conditions

In this experiment, we aim to investigate Fe-Si-H phase relations at high-pressure and high-temperature conditions. The experimental results are significant for constraining the composition of the inner core of the Earth and other terrestrial planets. In addition, we plan to measure the thermal equation of state of Fe-Si-H-alloys to get the density and bulk modulus of the materials that are the necessary parameters for calculating sound velocities. Our measurements will allow the refinement of the amount of Si and H in the Earth’s core.