Equation of State of Solid Argon under High-Pressure up to 100 GPa

Based on the latest X-ray diffraction experiment data and the atomic elastic differential cross-section measurement of argon, we obtained Ar-Ar interaction potential and the equation of state (EOS) for solid argon under 350 GPa. This EOS may be used as the ultrahigh pressure gauge above 150 GPa, which is urgently required in current high-pressure research. Solid argon can not only be used as the pressure transmitting medium for quasi-static hydraulic pressure, but also as a pressure gauge for high-pressure X-ray diffraction measurement. In this paper, we also calculated the value of Grneisen parameter, Debye character temperature, constant volume specific heat, isothermal bulk modulus and their pressure dependence for solid argon in the pressure range from 0~150 GPa.