Experimental sound velocities and Gr\"{u}neisen parameters for shocked Pb: Comparison with theory

With its low melting temperature and high shock impedance, Pb is a metallic element that gives liquid state data over a broad range of pressures accessible with a two-stage light-gas gun. Sound velocity and Gr\"{u}neisen parameter data from the rarefaction overtake method are reanalyzed for Pb shocked beyond the Hugoniot-melting curve intersection, between 54 and 380 GPa, and are compared to recent static data and theoretical melting curve and equation of state computations.