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Thermoluminescence of NaF and NaF:Tm phosphors exposed to beta particle irradiation.
Appl Radiat Isot
December 2024
Departamento de Investigación en Polímeros y Materiales, Universidad de Sonora, Apartado Postal 130, Hermosillo, Sonora, 83000, Mexico.
This work reports the synthesis and beta particle excited thermoluminescence (TL) characteristics of NaF and NaF:Tm phosphors synthesized via wet precipitation. The samples were subjected to thermal annealing at 750 °C for 5, 10, and 24 h in an air atmosphere. A sensitization effect is observed in repeated irradiation-TL readout cycles.
View Article and Find Full Text PDFCharacterization of natural soda ash for dosimetry using thermoluminescence technique.
Appl Radiat Isot
December 2024
Department of Physics, University of Botswana, Private Bag UB 0022, Gaborone, Botswana.
Soda ash, due to its various use for industrial applications, is a phosphor likely to be found in the vicinities of radiation facilities where retrospective dosimetry may be required in the unlikely events of radiation accidents/incidents. The ash is therefore a potential material for retrospective dosimetry using luminescence techniques. In this report, the thermoluminescence characteristics of soda ash from Suan pan, Botswana are presented.
View Article and Find Full Text PDFNovel non-thermoluminescent CaSO:Dy dosimeters.
Appl Radiat Isot
November 2024
Departamento de Investigación en Física, Universidad de Sonora, Apartado Postal 5-088, Hermosillo, Sonora 83190, Mexico. Electronic address:
The non-thermoluminescence afterglow-based dosimetry performance of self-agglomerating pellet-shaped CaSO:Dy phosphors synthesized through a low-cost, environmentally friendly method is first reported. Thermoluminescence (TL) and afterglow (AG) were analyzed in samples exposed to beta particle irradiation in the dose range from 0.06 to 8.
View Article and Find Full Text PDFMechanoluminescence (ML) materials have attracted much attention because of their mechano-optical conversion characteristics, which have shown broad application prospects in stress sensing and anti-counterfeiting technology in the past few decades. However, elastico-ML has not been demonstrated at the near-ultraviolet (NUV) range. In this study, a novel NUV elastico-ML material (Ca, Sr)MgAlSiO:Ce (CSMASOC) with a melilite-type structure is successfully developed.
View Article and Find Full Text PDFOptically stimulated luminescence (OSL) characteristics of four fluorite samples under green light stimulation.
Appl Radiat Isot
January 2025
Federal University of São Paulo, Rua Carvalho de Mendonça 144, 11030-400, Santos, Brazil.
This study investigates the OSL properties of four natural fluorite color varieties (green, purple, blue-yellow banded and yellow) under green light stimulation. Thermoluminescence reveals two peaks, with the green sample showing the strongest glow. OSL exhibits a fast initial decay followed by a slower one, with phototransfer observed in purple and yellow.
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