Shock-driven Rayleigh-Taylor/Richtmyer-Meshkov ripple evolution measurements using the split target geometry

The study of singly or multiply shocked Rayleigh-Taylor/Richtmyer-Meshkov systems usually uses an opaque, denser material to track the perturbed interface that is driven into a lower density, more transparent material. A difficulty of this setup is the obscuration of small-scale features, especially of the lighter material by the opaque denser material, can change the mix-width measurement. To mitigate this, we use a split target where one half produces a conventional radiograph, while the other provides an inverse image, where the light material is opaque and the dense material is transparent. \\ Here we present first measurements from re-shock experiments at the NIF, which use such a split target geometry to investigate the mix-width for initial single mode and 2D multimode perturbations.