Liquid xenon study under shock and quasi-isentropic compression

The equation of state of dense xenon plasma under double-shock compression to 172 GPA

“…The experimental results with different ρ 0 are well in agreement with the calculations by SFVT model considering the electronic excitation (ionization) in the condition of chemical equilibrium. The first shock compression results for dense gaseous Xe in our work are presented up to 90 GPa, and the second Hugoniot states can be shocked to 172 GPa with the density about 14 g/cm 3 . In this shock condition with high temperature and density, the first shock compression ratio of ρ/ρ 0 = 3.7 is observed for the initial pressure range of 20 MPa (ρ 0 = 2.20 g/cm 3 ).…”

“…Based on the continuity condition at the specimen/window interface, the second shock Hugoniot data of the dense Xe plasmas were deduced from the shock state of the sapphire. In our work the dense gaseous Xe can be shock compressed up to the pressure ranges of 50-172 GPa and the density of about 7-14 g/cm 3 . The detailed results are listed in Table 1.…”

“…The gaseous Xe data of Zheng et al and Gryaznov et al [10,11] are also plotted in Fig. 2., as well as the liquid Xe data [2][3][4][5] It is clearly seen that the experimental data with initial pressure of 20 MPa are in agreement with the calculated results, which are lied between the liquid and gaseous Xe of the lower initial pressures It makes clearly that the Hugoniot parameter S is not strongly dependent on the initial density ρ 0 of dense Xe in the range of our consideration, and the influence of the initial density for the Hugoniot parameter is fastened on the zero-pressure limit of the speed of sound C 0 , whose value will rise up with increasing ρ 0 .…”

“…In our experimental device the Xe specimen bounded by the base-plate and the sapphire was precompressed to the pressure about 20 MPa at room temperature. The corresponding initial density at this pressure is 2.20 g/cm 3 . The specimen target design with the flyer, the base-plate, the sample chamber, and the anvil should be optimized taking into account the effects of the rarefaction wave and the catch-up wave.…”

“…Of all the rare gases Xe is the one with a smaller ionization potential and the energy gap. The shock Xe Hugoniot data mainly concentrate on the compression of the initial liquid state [3][4][5], but the dense gaseous Xe in the high pressure ranges is scarcely involved, especially the compression properties. In static experiments using DAC the NM-M-T in solid Xe was observed at 130-150 GPa at room temperature [6].…”