Figure 1. Density increase of silica glass as a function of quench pressure at different temperatures.

Data at 27 °C were taken from Rouxel et al.¹⁵ and Deschamps et al.¹², at 400 °C from Mackenzie¹³ and Arndt and Stöffler¹⁷, at 700 °C from Poe et al.¹⁸, at 900 °C from Hofler and Seifert¹⁹ by the authors and plotted together with our data at 1,100 °C.