Study of binary Fe-FeO system using laser-driven dynamic compression

Oxygen is believed to be one of the main light element alloyed with iron in the Earth's core. It is therefore crucial to constrain the liquid Fe-O alloys properties over pressure of 200 GPa. In this frame, the present proposal aims at using XANES and EXAFS diagnostics to constrain the local atomic arranegment, as well as the spin state of Fe as function of pressure temperature and O content. In addition, Plasma Vapor Deposited targets are more and more common for high repetition rate shock compression experiments. Better characterizing the use of PVD targets is crucial for the future of shock compression studies on large-scale X-ray facilities.