Calcium carbonate as a possible dosimeter for high irradiation doses
Por:
Negron-Mendoza A., Uribe R.M., Ramos-Bernal S., Camargo-Raya C., Gomez-Vidales V., Kobayashi K.
Publicada:
1 jun 2015
Categoría:
Radiation
Resumen:
The aim of this work is to analyze the interactions of 5. MeV electron beam radiation and a 290. MeV/u Carbon beam with calcium carbonate (powder) at 298. K and at different irradiation doses, for the potential use of calcium carbonate as a high-dose dosimeter. The irradiation doses with the electron beam were from 0.015 to 9. MGy, and with Carbon beam from 1.5. kGy to 8. kGy.High-energy radiation induces the formation of free radicals in solid calcium carbonate that can be detected and measured by electron paramagnetic resonance (EPR).An increase of the EPR response for some of the free radicals produced in the sample was observed as a function of the irradiation dose. These measurements are reproducible; the preparation of the sample is simple and inexpensive; and the signal is stable for several months. The response curves show that the dosimeter tends to saturate at 10. MGy. Based on these properties, we propose this chemical compound as a high-dose dosimeter, mainly for electron irradiation. © 2014 Elsevier Ltd.
Filiaciones:
Negron-Mendoza A.:
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México (UNAM), México D.F., 04510, Mexico
Uribe R.M.:
Kent State University College of Technology, Kent, OH, United States
Ramos-Bernal S.:
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México (UNAM), México D.F., 04510, Mexico
Camargo-Raya C.:
Univ Nacl Autonoma Mexico, Inst Ciencias Nucl, Mexico City 04510, DF, Mexico
Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México (UNAM), México D.F., 04510, Mexico
Gomez-Vidales V.:
Univ Nacl Autonoma Mexico, Inst Quim, Mexico City 04510, DF, Mexico
Instituto de Química, Universidad Nacional Autónoma de México UNAM, México D.F., Mexico
Kobayashi K.:
Yokohama National University, Japan
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