EPR study of the gamma-irradiated RbClO4single crystals

Defects generated in single crystals of RbClO4by gamma irradiation at room temperature have been studied using the electron paramagnetic resonance (EPR) technique. The defects are assigned as ClO2, ClO3and O3-. Hyperfine coupling constants and g-values have been determined and discussed by comparing the results with previous studies of X- or gamma-irradiated earth alkali chlorates and perchlorates. It has been found that there are two chemically identical but magnetically distinguishable sites for ClO2and ClO3, whereas only a single site is observed for O3-. It should also be added that all the signals decrease by heating and by UV light treatment.