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Electron spin resonance (ESR) spectra of irradiated gum Arabic with doses between 0.5 and 5kGy were studied. A linear relationship between the absorbed dose and the intensities of the ESR spectra was observed. ESR spectra of irradiated gum Arabic showed a decay of relative concentrations of free radicals originated by radiation and the production of at least two species of free radicals with half-times:...
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