The 9th International Conference on Matter and Radiation at Extremes (ICMRE2026) ( ICMRE2026)

Hybrid fluid-PIC (particle-in-cell) simulations aimed at a better understanding of the characteristics of shock wave and Richtmyer–Meshkov instability (RMI) under high temperature and high density conditions are described. The use of the hybrid fluid-PIC method, which treats ions as the traditional particle-in-cell method and electrons as a massless fluid, is motivated by the difficulty of handling material mixing in the context of commonly used fluid simulations. The super-diffusive behavior observed at the plasma interface is primarily attributed to the kinetic effect, which exerts a considerable influence on the evolution of the shock wave and RMI. Applying time-varying viscosity and diffusion corrections to the analytical model of Carles and Popinet results in a high degree of alignment between the simulation outcomes and the theoretical predictions. These discussions contribute to a more detailed understanding of the physics of shock wave and RMI evolution in the inertial confinement fusion implosions.
 

Richtmyer–Meshkov instability,shock wave,inertial confinement fusion