Many-body polarization and overlap effects in the dynamic structure factor of dense krypton gas

Abstract

Molecular-dynamics computer simulations of dense krypton gas have been carried out for \ensuremath{\rho}=13.8 atoms/${\mathrm{nm}}^{3}$ and T=297 K, with use of the best available pair potentials. The results are compared to published experimental data at this state to discover the role of the many-body potentials of the atoms on their dynamics. It is found that these effects produce a marked slowing down of many-body collision processes.