46th International Workshop on High Energy Density Physics with Intense Ion and Laser Beams

Understanding radiative energy transport in stellar interiors requires accurate knowledge of the opacity of dense hydrogen plasmas, yet direct experimental constraints in the relevant regime have been absent. We report measurements of hydrogen opacity at extreme densities—up to ~800× solid density—and temperatures of a few million kelvin, achieved through a tailored low-velocity capsule...

States of extreme energy density – i.e., matter under high pressures and extremely high temperatures – are found in the interiors of planets (megabar pressures, several thousand kelvins) or stars (gigabar pressures, several million kelvins) and are highly relevant for the ultimate application of clean and reliable energy production by inertial fusion. A deep understanding of the complicated...

The investigation of equations of state, physical properties, and phase transitions of materials under extreme high-pressure conditions is a fundamental challenge in condensed matter physics and planetary science. Recent advancements in laser-driven compression techniques allow us to replicate these extreme states in laboratory settings, achieving terapascal (TPa) pressures, temperatures...

Ion stopping in dense plasmas is fundamental for understanding the plasma transport properties with direct implications for inertial confinement fusion, high-energy-density physics and laboratory astrophysics. This process remains poorly understood when the ion-plasma coupling parameter exceeds unity - a nonlinear regime where non-perturbative screening play an important role. We report a...