Abstract
The differences in SO − 3 radical distribution produced in gadolinium (Gd)-doped glaserite (K 3Na(SO 4) 2) rod after irradiation with β-, γ-, or X-rays was investigated by an electron spin resonance (ESR) imaging method. In β- or X-irradiated samples, the SO − 3 radical distribution showed a steep gradient in the rod. In γ-irradiated samples, the distribution showed only a slight gradient in the rod. From these results, ESR imaging can not only detect the radiation direction and the absorbed dose, but can also be expected to distinguish the dose quality.
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