ESR STUDY OF GAMMA-IRRADIATED SODIUM THIOSULFATE SINGLE CRYSTALS

For the trapped Radicals A, B, C, D and E, g- and 33S h f-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. © 1969, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.