Electron Spin Resonances in Gamma-Ray Irradiated Sodium Chlorate. I

Abstract

Single crystals of NaClO3 were subjected to gamma-ray irradiation at room temperature. Analysis of the resulting electron spin resonance spectrum indicates the production of three paramagnetic centers, initially, each with an effective spin of ½. The measured parameters of a center having resolved hyperfine structure and identified as ClO3 were g∥ = 2.0085±0.0010, g⊥ = 2.0090±0.0010, A = 14.8±0.1 G, and B = 21.2±0.1 G. No hyperfine interaction was detected for the remaining two centers having g∥ = 2.007±0.001 and g⊥ = 2.020±0.001, and g≃2.008, respectively. The centers are reasonably stable at room temperature for several months.