Modeling a Planar Heterogeneous Ablation Experiment on OMEGA

Ablation of heterogeneous material is not well understood and will play an important role in the implosion of targets such as the Polar Direct Drive- Wetted Foam (PDD-WF) concept that employ advanced fabrication techniques. To this end, we have designed and performed an experiment in a simplified planar configuration using the OMEGA cryo-platform which drives a shock through the target by ablating a heterogeneous medium of two-photon-polymerization (2PP) 3D-printed lattice and liquid deuterium (or a warm surrogate target of lattice in aerogel), where shock propagation speed and planarity of the shock structure relative to lattice morphology is measured via VISAR. Results of 2D and 3D xRAGE simulations modeling the experimental setup for a range of lattice sizes will be presented, showing the perturbation of the shock front generated by the 2PP lattice and the healing of the shock front after breakout from the lattice. Simulation results will be compared to experimental data from the shot day.