Rasmus, AM; Di Stefano, CA; Flippo, KA; Doss, FW; Kline, JL; Hager, JD; Merritt, EC; Desjardins, TR; Wan, WC; Cardenas, T; Schmidt, DW; Donovan, PM; Fierro, F; Martinez, JI; Zingale, JS; Kuranz, CC
We derive a model describing vorticity deposition on a high-Atwood number interface with a sinusoidal perturbation by an oblique shock propagating from a heavy into a light material. Limiting cases of the model result in vorticity distributions that lead to Richtmyer-Meshkov and Kelvin-Helmholtz instability growth. For certain combinations of perturbation amplitude, wavelength, and tilt of the shock, a regime is found in which discrete, co-aligned, vortices are deposited on the interface. The subsequent interface evolution is described by a discrete vortex model, which is found to agree well with both RAGE simulations and experiments at early times.