2016/11/30 by Irina Sagert, Wesley Even, Wesley P. Even +2 · 6 citations
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #Classical mechanics #Computational physics #High-pressure geophysics and materials #Implosion #Inertial confinement fusion #Kinetic energy #Laser-Plasma Interactions and Diagnostics #Mechanics #Nuclear physics #Particle (ecology) #Particle Dynamics in Fluid Flows #Physics #Plasma #Statistical physics #physics.comp-ph #physics.flu-dyn
paper · pdf · doi:10.1103/physreve.95.053206
published in Physical review. E 95(5), 053206 (American Physical Society) · 16 pages, 20 figures. Modified manuscript to match the published version
openalex created_date 2017/01/06 · openalex publication_date 2017/05/17 · arxiv created 2017/05/30 · arxiv updated 2017/06/01 · openalex updated_date 2026/08/05
We perform two-dimensional implosion simulations using a Monte Carlo kinetic particle code. The application of a kinetic transport code is motivated, in part, by the occurrence of nonequilibrium effects in inertial confinement fusion capsule implosions, which cannot be fully captured by hydrodynamic simulations. Kinetic methods, on the other hand, are able to describe both continuum and rarefied flows. We perform simple two-dimensional disk implosion simulations using one-particle species and compare the results to simulations with the hydrodynamics code rage. The impact of the particle mean free path on the implosion is also explored. In a second study, we focus on the formation of fluid instabilities from induced perturbations. We find good agreement with hydrodynamic studies regarding the location of the shock and the implosion dynamics. Differences are found in the evolution of fluid instabilities, originating from the higher resolution of rage and statistical noise in the kinetic studies.