Publications

Direct observation of spinlike reaction fronts in planar energetic multilayer foils

McDonald, Joel P.; Hodges, Vernon C.; Jones, E.D.; Adams, David P.

Propagating reactions in initially planar cobalt/aluminum exothermic multilayer foils have been investigated using high-speed digital photography. Real-time observations of reactions indicate that unsteady (spinlike) reaction propagation leads to the formation of highly periodic surface morphologies with length scales ranging from 1 μm to 1 mm. The characteristics of propagating spinlike reactions and corresponding reacted foil morphologies depend on the bilayer thickness of multilayer foils. © 2009 American Institute of Physics.