2023/03/29 by Weijie Li, Jie Zhou, Li, Wei-Jie +15
Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Fusion materials and technologies #High-pressure geophysics and materials #Laser-Plasma Interactions and Diagnostics #Plasma Physics (physics.plasm-ph)
paper · pdf · doi:10.48550/arxiv.2303.16546
openalex publication_date 2023/03/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Beryllium is an ablator material in the inertial-confinement fusion and hypervelocity impact studies. The thermoelastic properties, structure factors, and optical properties of beryllium are important in these studies. In this paper, the static structure factors, ion-ion dynamic structure factors, adiabatic velocity, and optical properties of beryllium along the Hugoniot were calculated by ab initio simulations. The static structure factors show that beryllium atoms were randomly distributed. The dynamic structure factors via the scattering function have extracted the dispersion relation for the collective excitations. By collecting the peak position of dynamic structure factors, the dispersion relation and adiabatic sound velocity were derived by definitions. By the calculated equation of state, the thermoelastic properties and adiabatic sound velocity have been derived. The two calculated methods about adiabatic sound velocity were verified to be equivalent.