Molecular dynamic simulation of the microstructure of inertial confinement fusion glass target

Alkali borosilicate glasses are used in inertial confinement fusion (ICF) as materials of hollow glass microspheres (HGMs). In this work, classical molecular dynamic simulation was addressed to study this kind of glass. Then the microstructure including bond lengths, bond angles, coordinate number and void sites distribution with different K (molar ratio of SiO2 to B2O3) and R (molar ratio of Na2O to B2O3) were gotten. After simulation, in the glass with different K and R, the network of silicate atoms keeps stable, and the network of boron atoms changes with the composition. At the same time, when we comes to the actual use of Ar-filled glass in the experiment of ICF, through simulation, if K is 40.5, R is 17.4, 8.5, 4.2, there are much more void sites in the glass for argon atoms to diffuse.