The dynamics, mixing, and thermonuclear burn of compressed foams with varied gas fills

Inertial confinement fusion (ICF) implosions involve highly coupled physics and complex hydrodynamics that are challenging to model computationally. Due the sensitivity of such small features, detailed simulations require accurate accounting geometry dimensionality initial conditions, including capsule defects engineering features as fill tubes used insert gas into capsule, yet this is computationally prohibitive. It therefore difficult evaluate whether discrepancies between simulation experiment arise from inadequate fidelity drive uncertainties in physical data by simulations, or physics. We present results high-resolution three-dimensional ICF performed part MARBLE campaign on National Ignition Facility [Albright et al., Phys. Plasmas 29, 022702 (2022)]. These experiments foam-filled separated-reactant experiments, where deuterons reside foam tritons deuterium–tritium (DT) reactions only occur presence mixing these materials. Material primarily seeded shock interaction with fill, which induces Richtmyer–Meshkov instability. compare for two different fills (ArT HT), lead significant differences hydrodynamic thermodynamic developments materials implosion. Our show generally good agreement demonstrate a substantial impact flows measured ion temperatures. The suggest viscosity, was not included our most important unmodeled qualitatively explains few experiment. also treatment shocks predict heating yield produced during flash, when converges at center Alternatively, underestimation level radiative preheat front could explain many simulation. Nevertheless, able reproduce experimental observables within reproducibility, yields, time-resolved X-ray self-emission images, an increase burn-weighted temperature neutron down-scattered ratio line sight includes jet glue spot joins hemispheres.