Dosimetry for simulated experiments in extraterrestrial conditions using thermally stimulated luminescence
Por:
Negrón-Mendoza A., Ramos-Bernal S., Hernández A., Ortiz A., Sánchez-Mejorada G., Frías D., Cruz E.
Publicada:
1 ene 2004
Resumen:
In recent years, the number of experiments related to the simulation of chemical reactions induced by radiation, that may take place in the interstellar medium, is growing very fast. To have a quantitative picture of the changes observed in those systems, a low-temperature dosimeter is needed. The aim of this paper is to search for a dosimetric system that can be used in those laboratory simulation experiments. Three systems were used in this study, (1) LiF:Mg,Cu,P, (2) CaSO4: Dy and (3) ferrous sulfate in frozen aqueous solution. There is a considerable effect in their behavior in relation to the irradiation temperature. The results for the two TL dosimeters show that their responses are dependent on the irradiation temperature. At low-radiation dose the response was linear with the dose (10-600 Gy). For the case of iron salt the response was linear in the range used (0-600 Gy). Numerical simulations fit the experimental data obtained with this dosimeter. © 2004 Elsevier Ltd. All rights reserved.
Filiaciones:
Negrón-Mendoza A.:
Chemistry Department, UNAM, C.U., A.P. 70-543, D.F. Mexico City O4510, Mexico
Ramos-Bernal S.:
Chemistry Department, UNAM, C.U., A.P. 70-543, D.F. Mexico City O4510, Mexico
Hernández A.:
Chemistry Department, UNAM, C.U., A.P. 70-543, D.F. Mexico City O4510, Mexico
Ortiz A.:
Chemistry Department, UNAM, C.U., A.P. 70-543, D.F. Mexico City O4510, Mexico
Sánchez-Mejorada G.:
Facultad de Medicina, UNAM, C.U., Mexico, D.F., Mexico
Frías D.:
Depto. de Cie. Exatas e Tecnologicas, Universidad Estadual de Santa Cruz, Brazil
Cruz E.:
Chemistry Department, UNAM, C.U., A.P. 70-543, D.F. Mexico City O4510, Mexico
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