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Updated: May 19, 2026

Phase-Dependent Control of Trap Depth and Persistent Luminescence in Strontium Aluminate Phosphors
Published on: December 5, 2025
PTOSL response of commercial Al2O3:C detectors to ultraviolet radiation
Claudia C Gronchi1, Linda V E Caldas
1FUNDACENTRO, MTE, Rua Capote Valente, 710, São Paulo 05049-002, Brazil. cgronchi@fundacentro.gov.br
Abstract:
The photo-transferred optically stimulated luminescence (PTOSL) technique using Al2O3:C detectors has been suggested as a good option for ultraviolet (UV) radiation dosimetry. The objective of this work was to study the PTOSL response of Al2O3:C InLight detectors and the OSL microStar reader of Landauer. The parameters such as radiation pre-dose, optical treatment time and UV illumination time were determined. The detectors presented a satisfactory stimulus of PTOSL signals when they were subjected to a preconditioning procedure with gamma radiation (1 Gy pre-dose), 30 min of optical treatment (to empty the shallow traps) and 30 min of UV illumination from an artificial source.
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