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Neutron diffraction patterns for vitreous germania, synthetic vitreous silica and radiation-damaged synthetic silica have been obtained to 18 Å-1. With the use of a special resolution function the results have been analysed to produce `radial distribution functions' free of truncation error ripples. The function for vitreous germania shows considerable improvement on previous x-ray measurements. Evidence for the concept of ordered groups of molecules in the glass is obtained from the radiation-damaged experiments.
E.A. Lorch (1969) studied this question.