2024/04/24 by Mohammadreza Banjafar, Banjafar, Mohammadreza, Lisa Randolph +37 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Diamond and Carbon-based Materials Research #Dust and Plasma Wave Phenomena #FOS: Physical sciences #Laser-Ablation Synthesis of Nanoparticles #Plasma Physics (physics.plasm-ph)
paper · pdf · doi:10.48550/arxiv.2404.15813
openalex publication_date 2024/04/24 · openalex created_date 2024/04/26 · openalex updated_date 2026/07/28
Particle-in-Cell (PIC) method is a powerful plasma simulation tool for investigating high-intensity femtosecond laser-matter interaction. However, its simulation capability at high-density plasmas around the Fermi temperature is considered to be inadequate due, among others, to the necessity of implementing atomic-scale collisions. Here, we performed a one-dimensional with three-velocity space (1D3V) PIC simulation that features the realistic collision frequency around the Fermi temperature and atomic-scale cell size. The results are compared with state-of-the-art experimental results as well as with hydrodynamic simulation. We found that the PIC simulation is capable of simulating the nanoscale dynamics of solid-density plasmas around the Fermi temperature up to ∼2~ps driven by a laser pulse at the moderate intensity of 1014-15~\mathrmW/cm2, by comparing with the state-of-the-art experimental results. The reliability of the simulation can be further improved in the future by implementing multi-dimensional kinetics and radiation transport.