A new x‐ray technique for the study of explosively accelerated metal systems is described. X‐rays from a 7‐Mev electron linear accelerator operated with a pulse length of 10 &mgr;sec pass through the assembly under study and are detected by NaI scintillators viewed by photomultipliers. Collimation is used to achieve time resolution of 0.2 &mgr;sec and space resolution of 0.025 cm parallel to the direction of motion and 1 cm perpendicular to the motion.