Evaluation of transparent and black commercial soda-lime glass irradiated with gamma radiation
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2019
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INTERNATIONAL CONFERENCE ON DOSIMETRY AND ITS APPLICATIONS, 3rd
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Introduction
The linearity characteristic in radiation dosimetry presents a growing interest. Glasses have
been applied to radiation high doses. The goal of this work was to expose transparent and dark
commercial soda-lime glasses samples to high doses and to use the UV-Vis spectrophotometry
technique for their evaluation.
Methods
Transparent and dark commercial soda-lime glasses with dimensions of 1 x 10 x 40 mm3 were
irradiated with doses from 1 kGy to 10 kGy using a 60Co Gamma-Cell system 220, and then were
evaluated with the UV-Vis technique. The sensitivity and linearity characteristics were evaluated
with the absorbed profi les of the multivariate calibration Partial Least Square Regression (PLSR)
and Principle Component Regression (PCR) techniques.
Results
The PLSR and PCR techniques showed, on the range of 1-10 kGy, for the calibration curves,
of transparent and black commercial soda-lime glass, linearity values of 0.9432 and 0.9422
respectively using just three components on both methods. The spectra present a baseline
variation (and maximum absorbance values) proportional to the absorbed dose received by the
samples. These results show that it is possible to use the technique of UV-Vis to determine
if the glass samples were irradiated or not. The color changes for transparent glass irradiated
with absorbed doses from 1 kGy up to 10 kGy. This color variation in relation to absorbed dose
indicates that the glasses may be used as YES/NO dosimeters.
Conclusions
The UV-Vis measurements may be useful in gamma radiation dosimetry, using the spectra of
irradiated glasses; the highest linearity was shown in order respectively for transparent and
black commercial soda-lime glass; the glass samples changed their coloration proportional to
the absorbed doses, and they may be used as Yes/No detectors and as high-dose dosimeters.
The results indicate a good linear response and the radiation detectors present potential use
for radiation dosimetry in high doses.
Como referenciar
OLIVEIRA, LUCAS N. de; NASCIMENTO, ERIBERTO O.; ANTONIO, PATRICIA L.; CALDAS, LINDA V.E. Evaluation of transparent and black commercial soda-lime glass irradiated with gamma radiation. In: INTERNATIONAL CONFERENCE ON DOSIMETRY AND ITS APPLICATIONS, 3rd, May 27-31, 2019, Lisboa, Portugal. Abstract... Lisboa, Portugal: C2TN, Instituto Superior Técnico, Universidade de Lisboa, 2019. Disponível em: http://repositorio.ipen.br/handle/123456789/31015. Acesso em: 19 Apr 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.