TY - JOUR AB - In this paper, we describe a new approach enabling study of subsurface dynamics in high-Z materials using the unique combination of high-energy synchrotron X-rays, a hybrid bunch structure, and a new dynamic loading platform. We detail the design and operation of the purpose-built, portable small bore gas-gun, which was installed on the I12 high-energy beamline at the Diamond Light Source and used to drive compression waves into solid and porous metal targets. Using a hybrid bunch structure and broadband X-ray pulses of up to 300 keV, radiographic snapshots were captured during various dynamic deformation processes in cm-scale specimens, thereby contributing to a more complete understanding of the evolution of mesoscale damage. Importantly, we highlight strategies for overcoming the challenges associated with using high-energy X-rays, and suggest areas for improvement needed to advance dynamic imaging through large-scale samples of relevance to engineering scenarios. These preliminary measurements demonstrate the feasibility of probing highly transient phenomena using the presented methodology. AU - Eakins,D AU - Chapman,D DO - 10.1063/1.4904275 EP - 123708 PY - 2014/// SN - 1089-7623 SP - 123708 TI - X-ray imaging of subsurface dynamics in high-Z materials at the Diamond Light Source T2 - Review of Scientific Instruments UR - http://dx.doi.org/10.1063/1.4904275 UR - http://scitation.aip.org/content/aip/journal/rsi/85/12/10.1063/1.4904275 UR - http://hdl.handle.net/10044/1/21690 VL - 85 ER -