Dynamic structure factor of liquid caesium near the melting point within the viscoelastic approximation

摘要

Both the static and dynamic properties of liquid caesium are investigated for a thermodynamic state near the melting point. The effective pair potential is calculated with the Fiolhais et al. [Phys. Rev. B 51, 14001 (1995)] pseudopotential initially developed for the solid state. The static structure factor is determined within the hybridized mean-spherical approximation and the dynamic structure factor owing to the viscoelastic approximation. The results obtained are in good agreement with the experimental measurements reinforcing the ability of this pseudopotential to be transferable from the solid state to the liquid state.