Abstract
The interstice statistics of the oxygen sublattice of the canonical inorganic glass-former silica have been investigated theoretically for a number of structural models of v-SiO2. It is found that spheres with radii smaller than 2.41 Å minus the oxygen radius can travel freely through a model of v-SiO2 made by Feuston and Garofalini. The nonoverlapping interstice size distribution can be described by a log-normal function. The concentrations of interstitial sites in these models with radii greater than the size of rare-gas atoms agree with the experimental values from gas-solubility studies.

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