Thermoluminescence of novel MgO–CeO2 obtained by a glycine-based solution combustion method

Barrón, Victor Ramón Orante; Ochoa, Flor María Escobar; Vázquez, Catalina Cruz; Bernal, R.

doi:10.1016/j.apradiso.2016.02.002

Cited by 6 publications

(6 citation statements)

References 14 publications

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“…Indeed, the observed effect of the heating rate on the TL glow curves is expected, and the material is obeying the theoretical predictions. The data listed in Table 1, are plotted according to the adapted Hoogenstraaten's Method, Equation (9). The relation between ln(T 2 m/β) and (1/Tm), giving rise to a straight line, as shown in Figure 2.…”

Section: Applications Of Hoogenstraaten's Methods and O-cfp For Obtainmentioning

confidence: 99%

“…The data listed in Table 1 are plotted according to the adapted Hoogenstraaten's Method, Equation (9). The relation between ln(T 2 m / β) and (1/T m ), giving rise to a straight line, as shown in Figure 2.…”

Section: Applications Of Hoogenstraaten's Methods and O-cfp For Obtainmentioning

confidence: 99%

“…The development of luminescent materials has been successfully applied in diverse fields and has dramatically enhanced human life [2]. Applications of the TL phenomenon are found not only in dosimetry, research, earth sciences, and the age determination of archaeological or geological samples [3][4][5][6][7], but also in light-emitting diodes for home lightning [8], and bio-imaging medicine for cancer cells mapping [9].…”

Section: Introductionmentioning

confidence: 99%

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Determination of Thermoluminescence Kinetic Parameters of La2O3 Doped with Dy3+ and Eu3+

Bakr

Omer

2020

Materials

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Thermoluminescence (TL) properties of La2O3: Dy3+, Li+, and La2O3: Eu3+, Li+, exposed to 5.12 Gy of beta radiation, and recorded at different heating rates 0.5, 1, 2, 3, 4, and 5 °C s−1 (from Molefe et al., paper 2019), were analyzed and the trap parameters were determined in this study. These parameters include the order of kinetics b, the activation energy E (eV), the frequency factor S (s−1), or the pre-exponential factor S’’ (s−1), and the initial concentration of trapped electrons no (cm−3). A new non-linear curve fitting technique, based on the general order kinetic equation and the outcomes of Hoogenstraaten’s Method, was established and applied on the TL glow peaks of La2O3: Dy3+, Li+. The fitting technique was evaluated by calculating the R-square and figure of merit (FOM) values. The results revealed that the FOM values are <1%, and the R-square values are >0.997, which demonstrates an excellent convergence between experimental and fitted curves. A modified technique based on the three-points analysis method was exploited to deconvolute complex TL glow curves of La2O3: Eu3+, Li+, and in turn to determine the trap parameters the method disclosed that each TL glow curve consists of four peaks. The trap parameters of the individual peaks were numerically determined. The fading, as a function of storage temperature and time, from the TL signals of the investigated materials was predicted and discussed based on the calculated trap parameters. The results support the value of the materials for employment in radiation dosimeter applications with a low fading fraction.

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Section: Applications Of Hoogenstraaten's Methods and O-cfp For Obtainmentioning

confidence: 99%

Section: Applications Of Hoogenstraaten's Methods and O-cfp For Obtainmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Determination of Thermoluminescence Kinetic Parameters of La2O3 Doped with Dy3+ and Eu3+

Bakr

Omer

2020

Materials

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“…It has a melting point of ~ 2850 o C. It has a single phase, with rock salt structure (fcc) like oxides of other alkaline earth metals, cubic structure with lattice parameters a=b=c 4.23 Å. MgO ceramic is one of the investigated host materials in radiation dosimetry. But pure MgO does not exhibit high luminescence TL sensitivity to ionizing radiation, so researchers have been synthesized it with various dopants to improve the radiation sensitivity [1][2][3][4][5][6]. In the literature, there are many synthesis methods such as solution combustion, precipitation sol-gel, solid-state., etc.…”

Section: Introductionmentioning

confidence: 99%

“…They have been studied its structural characterization with XRD and SEM. They were found to be linear between 0.08 and 5.33 Gy [2]. Rao et al, (1992) reported using various magnesium salts such as Mg(NO3)2 and their combination with magnesium oxide in a presence flux.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the thermoluminescence properties Ti4+ doped MgO synthesized solid-state assisted solution combustion synthesis method

Özdemir

2021

Cumhuriyet Science Journal

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In this study, undoped MgO and titanium (Ti 4+ ) doped MgO ceramics were synthesized using the solid state-assisted solution combustion synthesis method. The structural characteristics were investigated using X-ray diffraction (XRD) and scanning electron microscope (SEM). TL curves of the MgO:Ti 4+ (0.1%wt) ceramic consist of three TL peaks located at 70, 250 and 290 o C with a heating rate of 2 o C/s after 1 Gy beta dose. Radioluminescence (RL) characteristic of the MgO:Ti 4+ (0.1%wt) ceramic was studied with excitations between 200 -1000 nm. It was found to be the four emission bands the maximums located at 327 nm (~3.79 eV), 694 nm (~1.78 eV), 715 (~1.73 eV), and 745 (~1.66 eV). Some dosimetric characteristics such as TL curve, reusability, dose-response, of the ceramic were investigated using the thermoluminescence (TL) technique using beta radiation of 90 Sr/ 90 Y. Dose-response characteristics showed the integrated TL signals between 170-350 o C exhibited a linear up to 20 Gy. The experimental results showed that if it is developed of the MgO:Ti 4+ (0.1%wt) ceramic can be considered as a dosimetric material with suitable properties in personal and medical applications.

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Optically stimulated luminescence dosimetry performance of novel MgO–La(OH)3 phosphors

Marcazzó

Orante-Barrón

Camargo

et al. 2020

Applied Radiation and Isotopes

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Thermoluminescence of novel MgO–CeO2 obtained by a glycine-based solution combustion method

Cited by 6 publications

References 14 publications

Determination of Thermoluminescence Kinetic Parameters of La2O3 Doped with Dy3+ and Eu3+

Determination of Thermoluminescence Kinetic Parameters of La2O3 Doped with Dy3+ and Eu3+

Investigation of the thermoluminescence properties Ti4+ doped MgO synthesized solid-state assisted solution combustion synthesis method

Optically stimulated luminescence dosimetry performance of novel MgO–La(OH)3 phosphors

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