Studies on many-body interactions and molecular dynamics simulations for the Hugoniot curves of liquid argon

Because of the fundamental nature of condensed rare gases, their potentials and equations of state have been studied extensively in recent years. In the present work, based on ab initio calculations on many-body interactions, the MSV III potential proposed by Parson et al. for argon system has been modified, and the molecular dynamics method is employed to calculate the Hugoniot curve for liquid argon system. Comparisons are performed between theoretical Hugoniot curve and the experimental measurements. This demonstrates that the coincidence degree between the theoretical and the experimental results are significantly improved