V. Balitska, Ya. Shpotyuk, J. Filipecki and O. Shpotyuk.
IOP Conference Series: Materials Science and Engineering, vol. 15, 2010, p. 012054.
Defect-related instability was studied in γ-irradiated (As2S3)1-x(Sb2S3)x glasses (x=0, 0.1, 0.2 and 0.3) using positron annihilation lifetime spectroscopy treated within high-measurement statistics. The observed decrease in average positron lifetime in the studied glasses is explained as a renovation of destroyed covalent chemical bonds after irradiation. This process is governed by monomolecular relaxation kinetics, being described in the framework of universal configuration-coordinate model.