Sound Velocity in Natural Shock-Compressed Uranium in a Pressure Range of 20–260 GPa

This paper presents the results of sound velocity measurements performed in natural uranium during the high-rate strain of sound in - and -phase regions, as well as in a melting region at a shock wave front. The processes are recorded using the manganin sensor method (range 20–110 GPa) and the optical analyzer technique (range 70–260 GPa). In the region of the solid uranium phase, changes in Poisson’s ratio, Young’s modulus, bulk modulus, and shear modulus along the uranium Hugoniot are determined.