X-Ray Raman Spectroscopy of High-Pressure Phases and Novel Materials derived from Low-Z Compounds

1High Pressure Physics Group, H-Division, Physics & Advanced Technologies, Lawrence Livermore National Laboratory, Livermore, CA U.S.A.; 2GSECARS, Consortium for Advanced Radiation Sources, The University of Chicago, Chicago, IL, U.S.A.;3James Franck Institute, The University of Chicago, Chicago, IL U.S.A. Introduction We have used X-ray Raman spectroscopy (XRS) to study the oxygen and carbon K-edges of high pressure phases of CO and CO2 to understand changes in chemical bonding associated with the pressure-induced molecular-to-nonmolecular phase transitions in these materials. This work has exploit the power of the XRS technique to resolve important scientific questions regarding the nature of the high-pressure phases of CO and CO2.