E-beam induced damage in SiO2–Ge crystalline α-quartz, comparison with silica glass

Changes in surface morphology of silicate glass induced by fast electron irradiation

“…A special attention was paid to the study of silica both in crystalline and vitreous state due to its industrial importance [5]. Volume changes were also studied in the relation with the change of the refractory index [6].…”

Luminescence of polymorph crystalline and glassy SiO2, GeO2: A short review

“…Not even a trace of ODC-like luminescence has been observed in a-quartz samples. Introduction of germanium impurities into a-quartz does never leads to ODC formation near germanium [14]. Only STEs near substitutional Ge is observed in such samples.…”

γ-ray induced GeODC(II) centers in germanium doped α-quartz crystal

“…At high doses (N1 C/cm²), dilatation of the irradiated surface was observed followed by the appearance of a luminescence band at 4.4 eV that seems to be related to the presence of oxygen deficient center in the host material or SiODC in the amorphous volume. The luminescence at 3.1 eV of GeODC was not observed [6]. A possible explanation is that Ge atoms evaporated from the irradiated surface [6].…”

“…There was an attempt to create GeODC centers in Ge-doped α-quartz crystal by e-beam irradiation [6]. The result was negative.…”