(Institución)
 
 

Docu-menta > Medio Ambiente > Artículos de Medio Ambiente >

Por favor, use este identificador para citar o enlazar este ítem: http://documenta.ciemat.es/handle/123456789/3807

Título : Comparing the effect of electron beam, beta and ultraviolet C exposure on the luminescence emission of commercial dosimeters
Autor : Boronat Castaño, Cecilia
Correcher Delgado, Virgilio
Bravo Yagüe, Juan Carlos
Sarasola Martín, Iciar
García Guinea, Javier
Benavente Cuevas, José Francisco
Palabras clave : CaF2
Dosimeters
Kinetics Analysis
LiF
Luminescence
Ultraviolet
Fecha de publicación : jul-2023
Editorial : Elsevier
Citación : Boronat, C., Correcher, V., Bravo-Yagüe, J. C., Sarasola-Martin, I., Garcia-Guinea, J., Benavente, J.F. Comparing the effect of electron beam, beta and ultraviolet C exposure on the luminescence emission of commercial dosimeters. Spectrochim. Acta A. 295, 122571. (2023)
Resumen : This paper reports on the luminescence characterization of TLD-100 (LiF: Ti, Mg), TLD-200 (CaF2: Dy), TLD-400 (CaF2: Mn) and GR-200 (LiF: Mg, Cu, P) dosimeters exposed to electro beam, beta and ultraviolet C radiation -UVC-. All of them show high sensitivity to radiation regardless of whether it is ionizing or partially ionizing radiation based on their luminescence properties (cathodoluminescence -CL- or thermoluminescence -TL-). CL emission differs significantly among them in shape and intensity due to their chemical compositions. LiF samples display three maxima at: (i) 300–450 nm linked to intrinsic and structural defects, (ii) a green waveband probably due to F3 + centres or the presence of hydroxyl groups and (iii) the red-infrared emission band associated with F2 centres. However, CL spectra from the CaF2 dosimeters display meaningful differences due to the dopant. TLD-200 is characterized by an emission with four sharp individual peaks in the green-IR spectral region (due to the Dy3+), whilst TLD-400 exhibits a broad maximum peaked at ̴500 nm (linked to the Mn2+). On the other hand, the variation in the TL glow curves allows to discriminate the TLDs exposed to beta and UVC radiation since they give rise to different chemical-physical processes and that have been studied from the estimation of the kinetic parameters by means of the Computerised Glow Curve Deconvolution (CGCD) method.
Descripción : https://doi.org/10.1016/j.saa.2023.122571
URI : http://documenta.ciemat.es/handle/123456789/3807
ISSN : 13861425
Aparece en las colecciones: Artículos de Medio Ambiente

Ficheros en este ítem:

Fichero Descripción Tamaño Formato
2023_SAA_dosimeters-UVC-beta-electrons.pdf5.88 MBAdobe PDFVisualizar/Abrir
View Statistics

Los ítems de Docu-menta están protegidos por una Licencia Creative Commons, con derechos reservados.

 

Información y consultas: documenta@ciemat.es | Documento legal