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Effects of temperature during the irradiation of calcium carbonate
Alicia Negrón-Mendoza1, Claudia Camargo-Raya1, Virginia Gómez-Vidales2
1Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México (UNAM), México D.F. 04510, México.
Abstract:
Calcium carbonate received gamma irradiation at different doses (0-309kGy) and temperature regimes (77-298K) to study the effects of irradiation temperature. The changes were followed by EPR spectroscopy. We observed the formation of a composite EPR spectrum, even at low radiation doses and temperature. There was a strong effect on the evaluation of the radicals formed as a function of irradiation temperature, probably due to the diffusion in the frozen powder and the recombination of some radicals at room temperature.
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