UV-C Radiation Dosimetry Using Phototransfer OSL of Green Quartz – Teflon Pellets

This study presents the fabrication of dosimeters based on natural quartz crystals and polytetrafluoroethylene (Teflon®), and their use in ultraviolet type C (UV-C) radiation dosimetry. The luminescence was evaluated by measurements of phototransferred optically stimulated luminescence (PT-OSL), in...

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Bibliographic Details
Published inBrazilian journal of physics Vol. 54; no. 4
Main Authors Silva, Noemi Aguiar, Tatumi, Sonia Hatsue, Rocca, René Rojas, Yee, Márcio, Nagabushana, K. R., de Farias Soares, Alvaro, Duque, Isadora Augusta Machado, Fernandes, Caroline Paschoal
Format Journal Article
LanguageEnglish
Published New York Springer US 01.08.2024
Springer Nature B.V
Subjects
Dosimeters
Fading
Luminescence
Physics
Physics and Astronomy
Polytetrafluoroethylene
Quartz crystals
Reproducibility
Ultraviolet radiation
Green quartz
PT-OSL. UV-C dosimetry
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Summary:This study presents the fabrication of dosimeters based on natural quartz crystals and polytetrafluoroethylene (Teflon®), and their use in ultraviolet type C (UV-C) radiation dosimetry. The luminescence was evaluated by measurements of phototransferred optically stimulated luminescence (PT-OSL), in which the signal from deep traps was used. These dosimeters were characterized for their reproducibility, dose–response curve, fading and computerized deconvolution study. The PT-OSL signal proved to be reproducible, and its growth of the PT-OSL signal was supralinear up to a UV-C dose of 34 mJ/cm 2 approximately. A theoretical study of the PT-OSL signals was conducted using the general order model, revealing three individual components. Fading results demonstrated no significant signal loss within the first two hours. Spatial measurements showed that successful 2D dosimetry was performed using a UV-C radiation.
ISSN:0103-9733
1678-4448
DOI:10.1007/s13538-024-01516-9