ESR Study of γ-Irradiated Sodium Thiosulfate Single Crystals

Abstract

For the trapped Radicals A, B, C, D and E, g- and ³³S hf-tensor parameters are determined. Radicals A, B and C have already been identified as SSO₂⁻, SSO⁻ and SSO₃⁻ respectively. For Radical A g-tensor parameters are different from that reported, and these support the model more adequately. Optical absorption of this radical is shown. Observation of hf-interaction with central ³³S of Radical B confirms the reported model. For Radical C at least two sets of nonequivalent ³³S hf-satellites are observed, then the identification of SSO₃⁻ for this radical becomes more reliable. A feature of thermal decomposition of this radical into others is shown. Radical D which has the same chemical formula as SSO⁻ but has a conformation different from Radical B in the crystal lattice is found.