  In this work, the design and execution of an experiment with the goal of
demonstrating control over the evolution of a copper jet is described.
Simulations show that when using simple multi-material buffers placed between a
copper target with a conical defect and a cylinder of high-explosive, a variety
of jetting behaviors occur based on material placement, including both jet
velocity augmentation and mitigation. A parameter sweep was performed to
determine optimal buffer designs in two configurations. Experiments using the
optimal buffer designs verified the effectiveness of the buffer and validated
the modeling.
