Radiation damage and sensitization effects on thermoluminescence of LiF:Mg,Ti (TLD-700)

Farag, Mohammed; Sadek, A.M.; Shousha, Hany A.; El-Hagg, A.A.; Atta, M. R.; Kitis, G.

doi:10.1016/j.nimb.2017.06.018

Cited by 9 publications

(8 citation statements)

References 30 publications

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“…It has been previously reported that the TL dose responses of some natural materials are sublinear, for example, dolomite, calcite, and tuff, while a few are superlinear, such as amethyst quartz [10] and feldspar. In the present study, we report for the first time sensitization studies of naturally grown phyllite material, which is not similar to any previous reports of natural materials [4,11,[18][19][20][21][22].…”

Section: Introductioncontrasting

confidence: 95%

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Thermoluminescence Sensitization of Phyllite Natural Rock

et al. 2022

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A sensitization procedure is used to enhance the thermoluminescence (TL) sensitivity of phyllite to emit radiation. Phyllite is a type of foliated metamorphic rock made from slate. This study examines naturally grown phyllite rock, which had not been previously studied. Using a Thermo 3500 manual reader, the TL sensitivity of phyllite as a function of dosage was measured. The doses required to perform this study were administered using a 60Co source. The statistical regression test of the data had a significance level of p < 0.05. The study also included thermal and pre-dose effects. Using the sensitization procedure, the nonlinearity in TL dose–response was removed, and the sensitivity was increased 44 times that of its original value. The fading study showed a dependence on the test dose. According to the obtained results, the combination of linear dose–response and high sensitivity to gamma radiation makes phyllite an important rock for dating and retrospective dosimetry.

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Section: Introductioncontrasting

confidence: 95%

“…Additionally, the thermal history of a material, which includes the heating conditions, has also a significant bearing on its luminescence characteristics [12,18,19]. The sensitization method was also investigated for synthetic materials [20].…”

Section: Introductionmentioning

confidence: 99%

Thermoluminescence Sensitization of Phyllite Natural Rock

et al. 2022

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“…Farag et al [11] have developed sensitization procedure for LiF (TLD-700) dosimeters. It has been found the post-irradiation anneal at 553K (280°C) for 30 min and a pre-test dose of 2 kGy have increased the sensitivity (total area under the glow-curve) of the dosimeters by a factor of ~35.…”

Section: Introductionmentioning

confidence: 99%

“…The high-temperature thermal treatment could be due to the thermal annealing or the temperature during the readout process. In the work of Farag et al [11], the thermal annealing for the sensitized LiF dosimeters has been adjusted to 553K (280°C) which cannot be considered high temperature.…”

Section: Introductionmentioning

confidence: 99%

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Reliability of Reusing the Sensitized Lif Thermoluminescence Dosimeters

Farag

Sadek

Shousha

et al. 2019

Al-Azhar Bulletin of Science

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The reliability of reusing the sensitized thermoluminescence (TL) for LiF (TLD-100) dosimeters have been investigated. It has been found that reusing the same sensitized LiF dosimeters may influence the sensitivity of the dosimeters even under the same experimental conditions when the temperature readout range does not include the high-temperature TL signal at T > 505K. But, if the high-temperature TL signal is included in the temperature readout range, it has been found that the ultra-high temperature TL signal significantly increases with increasing the number of reusing the dosimeters. After almost 7 times of reusing the sensitized dosimeters, the total area under the glow-curve becomes stable and independent of the number of reusing the dosimeters. It has been also found that the TL signal located between the low-temperature TL signal and the ultra-hightemperature TL signal was almost stable over all the number of reusing the dosimeters. For all the lowtemperature peaks, the kinetics parameters of the sensitized LiF dosimeters have not to be influenced by reusing the same dosimeters. However, the activation energy of peak 5 which lies at temperature range (460-500K) has been influenced by the readout temperature range and reusing the dosimeters. The typical value for this glowpeak has been obtained in the case which the high-temperature TL signal has been included in the temperature readout.

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Thermoluminescence versatility in sulfate-based phosphors

Kadam

Dhoble

2023

Phosphor Handbook

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Radiation damage and sensitization effects on thermoluminescence of LiF:Mg,Ti (TLD-700)

Cited by 9 publications

References 30 publications

Thermoluminescence Sensitization of Phyllite Natural Rock

Thermoluminescence Sensitization of Phyllite Natural Rock

Reliability of Reusing the Sensitized Lif Thermoluminescence Dosimeters

Thermoluminescence versatility in sulfate-based phosphors

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