Examining the transition enthalpy of Sn from shock melting

Dynamic measurements of shock melting in metals using XRD have enabled tightly constrained determination of the extent of the solid-liquid two-phase region along the Hugoniot. The phase evolution along the Sn Hugoniot from 30-90 GPa has been constrained using laser driven shock loading coupled with XRD at the Dynamic Compression Sector. The results of this study will be presented. This will then be followed by a discussion of the use of this diffraction data to constrain the transition enthalpy and entropy assuming two different melt boundaries.