Shock loading a rippled interface between liquids of different densities

Experimental results of the nonlinear growth of perturbations on a shocked interface between liquids having a density ratio of 10 are reported. After the shock passes from the higher‐density liquid into the lower‐density liquid, spikes of the higher‐density liquid are observed to grow into the other liquid without producing severe turbulence. The measured growth is compared with analytical estimates. The time‐resolved shadowgraphs provide excellent data for testing hydrodynamics models.