Pulsed Power Experiments Examining Feedthrough and Mix from 2D and 3D Interacting Features

Understanding the impact of hydrodynamic perturbations transmitted through thin, dense layers is important for inertial confinement fusion ignition schemes, particularly double- or multi-shell systems. Validation experiments are challenging as they necessarily involve a complex interplay between instability growth, shock perturbation, and transmitted and reflected shocks across multiple interfaces. The LANL/Sandia Z Double Cylinder platform is a multi-layer imploding system for examining the cumulative impact of interacting defects onto interior layers. The platform consists of an outer Be cylindrical liner filled with nested liquid deuterium layer, interior Be cylinder, second D2 layer, and a center Cu rod. The nested cylinders are magnetically imploded with >20 MA of current along the outer cylinder only, driving a converging shock that propagates towards the central axis and generating a high plasma-beta system suitable for investigating high-energy-density hydrodynamical processes. We present the first experimental data of 3D instability growth and feedthrough from both 2D (grooves) and 3D (divots) interacting feature-driven jets in a multi-layer system, including comparison to 2D and 3D xRAGE simulations.