EXAFS measurements of shocked, porous Cu

We combine EXAFS and VISAR measurements of shocked, initially porous Cu. Higher initial porosity leads to higher internal energy in the shocked state due to void collapse and therefore generates increasing temperature with increasing porosity. By varying the initial porosity, it is possible to make multiple Hugoniot measurements along an isochore and thus isolate thermal contributions to the compressed states. We will additionally constrain thermodynamic properties like the isochoric heat capacity. While this powerful technique dates back to the earliest days of dynamic compression, there exist no temperature data of shocked porous samples and almost no temperature data across the entirety of dynamically compressed solids.