High pressure platform development for the Z Machine: compression of platinum to 650 GPa

Effort in recent years has succeeded in developing a new high pressure, low uncertainty ramp compression platform for the Z Machine that is capable of driving high impedance materials to pressures approaching those achievable on the National Ignition Facility (NIF). Bayesian uncertainty quantification (UQ) techniques on a recent platinum experiment indicate that density uncertainties are less than 2% at 650 GPa. The peak pressure analyzed on this new platform is over 80% of the pressure recently achieved in platinum on NIF. We will discuss advances that made the platform realizable as well as UQ techniques employed.