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Neutron Scattering Studies of Vitrified Radioactive Waste
Author(s) -
SINCLAIR ROGER N.,
DESA J. A. ERWIN,
WRIGHT ADRIAN C.
Publication year - 1983
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1983.tb09972.x
Subject(s) - borosilicate glass , materials science , nanometre , radioactive waste , scattering , neutron scattering , neutron diffraction , crystallite , small angle neutron scattering , small angle scattering , diffraction , neutron , mineralogy , analytical chemistry (journal) , optics , composite material , nuclear chemistry , nuclear physics , chemistry , metallurgy , physics , chromatography
The structure of a borosilicate glass containing simulated nuclear waste on a distance scale up to several tens of nanometers was investigated using neutron scattering techniques. Comparison of samples with and without waste suggests that the nature of the basic network of SiO 4 tetrahedra and BO 3 triangles is largely unchanged by addition of the waste. The real‐space correlation function for the glass plus waste has clear features at distances below 0.5 nm, which can be attributed to the above network building units. Study of a partially devitrified sample shows diffraction effects due to polycrystalline and vitreous phases. Vitreous and partially devitrified glass containing waste produced a significant amount of small‐angle scattering corresponding to regions of inhomogeneity which are 10 nm and larger.