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Raman spectroscopy is a useful experimental tool to investigate localdeformation and structural changes in SiO$_2$-based glasses. Using asemi-classical modelling of Raman spectra in large samples of silica glasses,we show in this paper that shear plastic flow affects the Raman measurement inthe upper part of the spectrum. We relate these changes to structuralmodifications, as well as a detailed analysis of the vibration modes computedin the same frequency range. These results opens the door to in situ monitoringof plastic damage in silica-based structures.

Raman measurement of irreversible shear in SiO$_2$ glass