Local atomic order in As 34 Se 51 Ag 15 and As 34 Se 51 I 15 glasses

As34Se51Ag15 and As34Se51I15 glasses have been studied with high energy X-ray diffraction, neutron diffraction and extended X-ray absorption spectroscopy at various edges. The experimental data have been modelled simultaneously with the reverse Monte Carlo simulation method. Combination of the three independent measurements allowed the separation of the partial pair correlation functions and estimation of the corresponding coordination numbers. Structure modifications