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Upper Panel: Comparison between the 11B MAS NMR spectra (9.4T) of the damaged and annealed ISG-Cm glasses. Lower Panel: Comparison between the ISG and ISG-damaged with Xe (92MeV) and Au (1–7MeV) irradiation6,7 acquired at higher magnetic field (11.7T). Spectra are normalized to the same area.