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The first direct in situ observations of the production and microsegregation of radiolytic interstitial oxygen resulting from electron beam irradiation of crystal and amorphous oxygen deficient SiO₂ polymorphs has been made using cathodoluminescence (CL) microanalysis (spectroscopy and microscopy). Previously unreported near-infrared CL emission is observed at 0.968±0.003eV from crystal α-SiO₂ (quartz) and at 0.971±0.003eV from amorphous a-SiO₂ (fused quartz and silica glasses) at 290 K. The energy and width of the near-infrared CL emission from electron-irradiated α-SiO₂ polymorphs is consistent with the O₂ ¹Δg→³Σg^- transition associated with molecular oxygen.
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Marion A. Stevens‐Kalceff (2000) studied this question.
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