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Methodological possibilities of positron annihilation lifetime (PAL) spectroscopy applied to characterize different types of nanomaterials treated within three-term fitting procedure are critically reconsidered. In contrast to conventional three-term analysis based on admixed positron- and positronium-trapping modes, the process of nanostructurization is… (More)
Bulk and thermally evaporated film forms of As2Se3 and Ge23Sb7S70 were subjected to gamma irradiation and characterized periodically after exposure. Differences in the effect of exposure were observed between bulk and film forms.