Abstract
Abstract The yield of trapped electrons produced in ethylene glycol-water glass at 77°K increased linearly with the gamma dose up to 1.5×1020 eV/g, and the G value was estimated to be 2.8±0.2. The relative reaction rates of mobile electrons with various inorganic ions at 77°K were determined by competition kinetics. The observed relative reaction rates with simple inorganic ions corresponded to those of hydrated electrons obtained at room temperature. For complex ions, however, the reactivities of the mobile electrons were larger than those of hydrated electrons. The reaction products, such as bromine dioxide, Cr(V) species, and the pentacyano Co(II) ion, all of which are unstable at room temperature, could be detected by optical and ESR spectroscopies at 77°K.
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