Spectral changes and wavelength dependent thermoluminescence of rare earth ions after X-ray irradiation

Townsend, Peter; Finch, Adrian A.; Maghrabi, M.; Ramachandran, Vasuki; Vázquez, G. V.; Wang, Y.; White, D.R.

doi:10.1016/j.jlumin.2017.07.041

Cited by 12 publications

(1 citation statement)

References 18 publications

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“…The prepared samples were automatically heated at 50 • C by the TLD reader before recording the glow curve, and the temperature was gradually incremented at the heating rate of 1 • C/s up to 10 • C/s. Ideally, the optimum heating rate should achieve the highest TL intensity with the lowest standard deviation [72]. As shown in Figure 10, the optimum heating rate corresponding with the highest TL intensity is set at 5 • C/s.…”

Section: Heating Ratementioning

confidence: 99%

Development of Ag-Doped ZnO Thin Films and Thermoluminescence (TLD) Characteristics for Radiation Technology

et al. 2022

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This work examined the thermoluminescence dosimetry characteristics of Ag-doped ZnO thin films. The hydrothermal method was employed to synthesize Ag-doped ZnO thin films with variant molarity of Ag (0, 0.5, 1.0, 3.0, and 5.0 mol%). The structure, morphology, and optical characteristics were investigated using X-ray diffraction (XRD), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDX), photoluminescence (PL), and UV–vis spectrophotometers. The thermoluminescence characteristics were examined by exposing the samples to X-ray radiation. It was obtained that the highest TL intensity for Ag-doped ZnO thin films appeared to correspond to 0.5 mol% of Ag, when the films were exposed to X-ray radiation. The results further showed that the glow curve has a single peak at 240–325 °C, with its maximum at 270 °C, which corresponded to the heating rate of 5 °C/s. The results of the annealing procedures showed the best TL response was found at 400 °C and 30 min. The dose–response revealed a good linear up to 4 Gy. The proposed sensitivity was 1.8 times higher than the TLD 100 chips. The thermal fading was recorded at 8% for 1 Gy and 20% for 4 Gy in the first hour. After 45 days of irradiation, the signal loss was recorded at 32% and 40% for the cases of 1 Gy and 4 Gy, respectively. The obtained optical fading results confirmed that all samples’ stored signals were affected by the exposure to sunlight, which decreased up to 70% after 6 h. This new dosimeter exhibits good properties for radiation measurement, given its overgrowth (in terms of the glow curve) within 30 s (similar to the TLD 100 case), simple annealing procedure, and high sensitivity (two times that of the TLD 100).

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Section: Heating Ratementioning

confidence: 99%

Development of Ag-Doped ZnO Thin Films and Thermoluminescence (TLD) Characteristics for Radiation Technology

et al. 2022

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Cathodoluminescence spectra recorded from surfaces of solids with hydrous molecules

García-Guinea

Correcher

Can

et al. 2018

Journal of Electron Spectroscopy and Related Phenomena

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Doping Sm3+ into ZnB2O4 phosphors and their structural and cathodoluminescence properties

Küçük

Bulcar

Doǧan

et al. 2018

Journal of Alloys and Compounds

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Spectral changes and wavelength dependent thermoluminescence of rare earth ions after X-ray irradiation

Abstract: This is a repository copy of Spectral changes and wavelength dependent thermoluminescence of rare earth ions after X-ray irradiation.

Cited by 12 publications

References 18 publications

Development of Ag-Doped ZnO Thin Films and Thermoluminescence (TLD) Characteristics for Radiation Technology

Development of Ag-Doped ZnO Thin Films and Thermoluminescence (TLD) Characteristics for Radiation Technology

Cathodoluminescence spectra recorded from surfaces of solids with hydrous molecules

Doping Sm3+ into ZnB2O4 phosphors and their structural and cathodoluminescence properties

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