Structural modification of chalcogenide glasses by gamma-irradiation studied with DBAL technique

Abstract

The original experimental results on the study of structural modification of chalcogenide glasses by 60Co γ-irradiation with energy of 1.25 MeV and dose of 2.41 MGy for As2S3, Ge15.8As21S63.2, Ge9.5As28.6S61.9 and Ge23.5As11.8S64.7alloys using Doppler broadening of annihilation line (DBAL) technique are reported. The γ-irradiation-induced effect is analyzed in terms of Doppler S and W annihilation parameters. In particular, the observed different slope of S -W plots for glassy (g-) As2S3 and g-Ge15.8As21S63.2studied in the unirradiated and γ-irradiated states indicates that the defect structure of these alloys in the radiation-modified state is different, obviously, as a result of various mechanisms of radiation-induced defect formation. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.