Equation of State and Observation of Partial Melting of B1 Phase MgO above 200 GPa from Shock Compression Experiments on Samples Preheated to 2300 K

Oleg V. Fat\'yanov, California Institute of Technology, Pasadena, CA, United States and Paul D Asimow, California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States