Effect of heating rate on the thermoluminescence and thermal properties of natural ulexite

Topaksu, M.; Correcher, V.; García-Guinea, Javier; Yüksel, Mehmet

doi:10.1016/j.apradiso.2014.10.020

Cited by 29 publications

(8 citation statements)

References 10 publications

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“…Methods like the various heating rate (VHR) can be also used in situations in which individual peaks, or at least some of them, are seen in the glow curve. A major disadvantage of this method is the presence of several overlapping peaks as in our study . In such cases, kinetic parameters are calculated by using the T m –T stop method and computerized glow curve deconvolution (CGCD) .…”

Section: Methodsmentioning

confidence: 98%

Thermoluminescence properties of gamma‐irradiated nano‐structure hydroxyapatite

Shafaei

Ziaie²,

Sardari

et al. 2015

Luminescence

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The suitability of nano-structured hydroxyapatite (HAP) for use as a thermoluminescence dosimeter was investigated. HAP samples were synthesized using a hydrolysis method. The formation of nanoparticles was confirmed by X-ray diffraction and average particle size was estimated to be ~30 nm. The glow curve exhibited a peak centered at around 200 °C. The additive dose method was applied and this showed that the thermoluminescence (TL) glow curves follow first-order kinetics due to the non-shifting nature of Tm after different doses. The numbers of overlapping peaks and related kinetic parameters were identified from Tm -Tstop through computerized glow curve deconvolution methods. The dependence of the TL responses on radiation dose was studied and a linear dose response up to 1000 Gy was observed for the samples.

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Section: Methodsmentioning

confidence: 98%

Thermoluminescence properties of gamma‐irradiated nano‐structure hydroxyapatite

Shafaei

Ziaie²,

Sardari

et al. 2015

Luminescence

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“…can be calculated using the Glow Curve Fitting (GCF) (Muñiz et al, 1995;Gomez-Ros et al, 2002), Whole Glow Peak (WGP) (Kalita and Chithambo, 2017), Peak Shape (PS) (Aslar et al, 2017;Keskin et al, 2018), Variable Heating Rate (VHR) (Topaksu et al, 2015;Aslar et al, 2017) and Initial Rise (IR) method (Chen and McKeever, 1997;Correcher et al, 2008), among others. The main advantage of the last method is that the E a parameter can be estimated regardless of the b value, although is a sensitive method to infer potential thermal pretreatments or changes in the heating rate.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 99%

Radiation effect on the UV-green thermally stimulated luminescence emission of a natural Na-rich aluminosilicate

Correcher

García-Guinea²,

Boronat

et al. 2019

Radiation Physics and Chemistry

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This paper reports on the thermoluminescence (TL) emission (from 250 to 500 nm) of a 10 Gy irradiated natural Na-rich aluminosilicate from Minas Gerais (Brazil), previously characterized by Raman spectroscopy and differential thermal analysis techniques. 3D-TL spectrum of the analyzed sample displays a complex glow curves with five different emissions bands peaked at 290, 380, 420, 460 and 500 nm that could be associated with structural and point defects. The UV-blue emission bands have the following characteristics: (i) the 290 nm waveband could be due to defects-sites by the presence of Na ions; (ii) the 380 nm band, caused by intrinsic defects in the lattice (i.e. Non-Bridging Oxygen Hole Centers (NBOHCs), [AlO 4 ] o centres, alkali planar defects and Oxygen Defect Centers (ODCs), among others); (iii) the 420 nm waveband, linked to the recombination on a centre formed from a hole-oxygen atom adjacent to two aluminum atoms (Al-O-Al) and Al-O-Si complexes; (iv) the 460 nm band, associated with the presence of Ti 4+ in the plagiclase crystal lattice. The green waveband could be linked to de-excitation of Mn 2+ ions. The estimation of the activation energy (E a ) from the 10 Gy-induced TL glow curves analyzed by means of the initial rise method display linear regressions with acceptable r coefficients (r > 0.977) that reveal three groups of components with traps at different depth in the crystal lattice of the albite with Ea values in the range of 0.5-0.64 eV.

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“…Some natural and synthetic samples exhibit thermoluminecent properties under suitable conditions of thermal stimulation. The thermoluminscent properties for natural samples depend on their location, history, impurities and composition [1][2][3][4][5]. Thiago Michel de Brito Farias, and Shigueo Watanabe [6] investigated the thermoluminescence properties of a variety of natural quartz, such as the blue, the green, the red, the pink, the black, the sulphurous and the milky quartz.…”

Section: Introductionmentioning

confidence: 99%

Thermoluminescence and Kinetic Analysis of Gamma Irradiated Some Rocks from Makkah, Saudi Arabia

Hafez

Attia

Hendi

2019

Arab Journal of Nuclear Sciences and Applications

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In the present work, some rocks were collected from Makkah, Saudi Arabia. Thermoluminescence technique was utilized to investigate the possibility of using the samples as an accidental radiation dosimeter. After γ-ray irradiation by Co-60 source, Makkah rocks sample revealed a TL-peak at 155°C. The peak position is decreased with the increase of the γ-dose. The chemical analysis of Makkah rocks was conducted using the XRF technique. The natural fading, the effect of temperature on the ability of the samples to be stored, the TL-signal and the optimum grain size of the samples were studied. The activation energy was calculated using the peak shape method. The TL-signal exhibits a linear response through the gamma dose range 0.01-1k Gy. In this range of exposure, the sample under study can be considered as an accidental dosimeter.

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Effect of heating rate on the thermoluminescence and thermal properties of natural ulexite

Cited by 29 publications

References 10 publications

Thermoluminescence properties of gamma‐irradiated nano‐structure hydroxyapatite

Thermoluminescence properties of gamma‐irradiated nano‐structure hydroxyapatite

Radiation effect on the UV-green thermally stimulated luminescence emission of a natural Na-rich aluminosilicate

Thermoluminescence and Kinetic Analysis of Gamma Irradiated Some Rocks from Makkah, Saudi Arabia

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