Ultrafast, In Situ Probing of Shocked Solids at the Mesoscale and Beyond: A New Paradigm for Materials Dynamics

Abstract

Understanding material response under dynamic conditions and extreme pressures at the lattice level is important for being able to generate predictive models of material response. Despite many decades of study, material behavior is primarily inferred from bulk measurements on dynamically loaded samples or the microstructure from recovery experiments and not determined from lattice level measurements made in-situ at the relevant length scale of the governing physics. In the work described here, we report on progress made in advancing this frontier with research conducted under LDRD 04-ERD-071. Specifically, we present advances in, and applications of, dynamic x-ray diffraction, Extended X-ray Absorption Fine Structure and dynamic transmission electron microscopy.