Abstracts Book - IMRC 2018

• SE3-P009
SYNTHESIS OF TiO2:Eu PHOSPHORS FOR HIGH DOSAGE
THERMOLUMINESCENCE DOSIMETERS
Guadalupe Aide Bustamante Lopez 1 , Catalina Cruz Vázquez 1 , Rodolfo Bernal Hernández 2 ,
Victor M. Castaño 3
1 Universidad de Sonora, Departamento de Investigación en Polímeros y Materiales, Mexico.
2 Universidad de Sonora, Departamento de Investigación en Física, Mexico. 3 Universidad
Nacional Autónoma de México, Departmento de Ingenieria Molecular de Materiales, Mexico.
Because the increasing risks for exposure to ionizing radiation sources due to
their applications in medicine, food industry, drug and weapon detection
systems, and global effect of accidents in nuclear power plants, it is required the
permanent and reliable monitoring of radiation levels.
Thermoluminescence (TL) dosimetry (TLD), based on the phenomenon of the
same name, allows to monitor the radiation dose levels. Although several
materials have been proposed as TL dosimeters, they do not meet all the
requirements for their application in all dosimetry areas, so it is imperative to
search for new high performance thermoluminescent materials. In this work,
results on the TL characterization of beta particle irradiated TiO 2 :Eu samples
prepared using a solution growth method are presented. The studied TiO 2 :Eu
pellet-shaped samples were subjected to different thermal treatments in air
atmosphere. The structural and morphological characterization were carried
out by X-ray diffraction and Scanning Electron Microscopy. To investigate their
TL properties, some samples were exposed to 500 Gy of beta radiation, and their
TL was recorded at a heating rate of 5 °C/s. The obtained glow curves for TiO 2 :Eu
sintered at 500 °C shows three TL maxima located at 122, 225 and 300 °C, and
one shoulder at 340 °C.
Keywords: thermoluminescence, dosimetry, ionizing radiation
Presenting authors email: aidebl@gimmunison.com