Positron life time spectroscopy as a method to study of the defect degree materials with disordered structure

Abstract

The paper presents the use of positron lifetime spectroscopy PALS to study the defect degree of structures of disordered materials, research materials were used as samples: the metallic glass, oxide glass, chalcogenide glass and polymer. As a result of the measurements obtained curves describing the dependence of the number of counts of acts of annihilation as a function of time. The distribution of positron lifetime spectra was carried out on three components. The calculated parameters uptake of positron and positronium in structurally disordered materials studied allow to draw conclusions about the degree and nature of defects of studied materials.