Figure 2
Atomic volume, obtained from the position of the (111) diffraction peak, of diamond products as a function of pressure. Red circles correspond to ‘a’ series measurements (decomposition at 11.5 Gpa) and blue squares to ‘b’ series measurements (decomposition at 29.0 GPa) shown in Fig. 1. The dashed line is the Vinet EOS for cubic diamond from19. The solid line is a Vinet EOS fit to the data shown here. Representative fits (red lines) to the diamond (111) diffraction peaks are shown in the inset.
