Figure 5
From: Measuring the structure and equation of state of polyethylene terephthalate at megabar pressures
Experimental setup applied for the Hugoniot measurements. VISAR and SOP were used to diagnose the conditions inside the shock-compressed layered sample. The data shown corresponds to a drive laser energy of 400 J. Upper insert: Shock velocity extracted from VISAR fringe-shifts over time. The dashed line denotes the position where the material (and therefore the index of refraction) changes, resulting in a jump in the scale.
