Temperature and Density on the Forsterite Liquid-Vapor Phase Boundary.

ABSTRACT: The physical processes during planet formation span a large range of pressures and temperatures. Giant impacts, such as the one that formed the Moon, achieve peak pressures of 100s of GPa. The peak shock states generate sufficient entropy such that subsequent decompression to low pressures intersects the liquid-vapor phase boundary. The entire shock-and-release thermodynamic path must be calculated accurately in order to predict the post-impact structures of planetary bodies. Forsterite (Mg₂SiO₄) is a commonly used mineral to represent the mantles of differentiated bodies in hydrocode models of planetary collisions. Here, we performed shock experiments on the Sandia Z Machine to obtain the density and temperature of the liquid branch of the liquid-vapor phase boundary

SUBMITTER: Davies EJ 

PROVIDER: S-EPMC8244105 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature