Effect of heating rate on thermoluminescence output of LiF: Mg, Ti (TLD-100) in dosimetric applications

Singh, Ranjit; Kainth, Harpreet Singh

doi:10.1016/j.nimb.2018.04.025

Cited by 26 publications

(16 citation statements)

References 37 publications

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“…Formation of the cluster and thermal quenching effect are responsible for the increase and decrease in TL intensity with HR, respectively. This phenomenon was explained by many research works [27][28][29]. By increasing the temperature, thermal quenching efficiency increases, and the glow peak shifts to the higher temperatures.…”

Section: Resultsmentioning

confidence: 86%

“…Obtained results showed that the maximum temperature and the FWHM of the glow peak rise with HR while intensity peak decreases. This phenomenon attributes to the increase in the probability of non‐radiative transition with an increase in HR and temperature [28].…”

Section: Resultsmentioning

confidence: 99%

“…Thermal quenching is a reason for this phenomenon. Moreover, the efficiency of this process rises as the temperature goes up [28]. This effect is a dominant phenomenon during the increase in HR.…”

Section: Resultsmentioning

confidence: 99%

“…In addition, the temperature gradients within the thick samples should be considered. The shift in the peak position ( T m ) can be determined by the temperature lag effect which has been investigated in many studies [28, 29]. Kafadar [31] has suggested the following procedure to correct the temperature lags during TL measurements.…”

Section: Resultsmentioning

confidence: 99%

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Synthesis and characterisation of LiB ₃ O ₅ nanophosphor as a TL dosimeter

Kaviani

Shahbazi‐Gahrouei

Saray

2020

IET nanobiotechnol.

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In this work, lithium triborate (LiB 3 O 5) nanophosphor was synthesised by precipitation assisted high-temperature solid-state method followed by heating at different sintering temperatures. Then, its crystal structure and morphology were fully characterised. LiB 3 O 5 was doped with different concentrations of different dopants. To determine the thermoluminescence (TL) properties and structural specifications of doped lithium triborate, the sample was irradiated by photons and then, its TL glow curve was obtained using a TL dosimeter-reader system. To study the effect of heating rate (HR) on TL characterisation of this nanophosphor, TL measurements were done at different HRs. The results showed that, sintering temperature can affect the morphology and structural properties of lithium triborate and consequently its TL intensity. The findings also showed that the LiB 3 O 5 :Al nanophosphor with the dopant concentration of 2 wt.% has the highest sensitivity and the best peak position among the studied activators. The results of the HR method showed that this method may be provided accurate calculations of the physical parameters of the TL process. These results may be helpful in the development of tissue equivalent TL nanocrystalline detectors usable in medical and personnel dosimetry.

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Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Synthesis and characterisation of LiB ₃ O ₅ nanophosphor as a TL dosimeter

Kaviani

Shahbazi‐Gahrouei

Saray

2020

IET nanobiotechnol.

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“…This applied potential should be in opposition to the intrinsic region’s electric field potential. Charges are not only stimulated electrically with the potential bias [13] but also thermally [10,29], and optically [30]. PN junctions are the main components of semiconductor devices as shown in Figure 3a.…”

Section: Photodiodes/ledsmentioning

confidence: 99%

A Review: Photonic Devices Used for Dosimetry in Medical Radiation

Damulira

Yusoff

Omar

et al. 2019

Sensors

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Numerous instruments such as ionization chambers, hand-held and pocket dosimeters of various types, film badges, thermoluminescent dosimeters (TLDs) and optically stimulated luminescence dosimeters (OSLDs) are used to measure and monitor radiation in medical applications. Of recent, photonic devices have also been adopted. This article evaluates recent research and advancements in the applications of photonic devices in medical radiation detection primarily focusing on four types; photodiodes – including light-emitting diodes (LEDs), phototransistors—including metal oxide semiconductor field effect transistors (MOSFETs), photovoltaic sensors/solar cells, and charge coupled devices/charge metal oxide semiconductors (CCD/CMOS) cameras. A comprehensive analysis of the operating principles and recent technologies of these devices is performed. Further, critical evaluation and comparison of their benefits and limitations as dosimeters is done based on the available studies. Common factors barring photonic devices from being used as radiation detectors are also discussed; with suggestions on possible solutions to overcome these barriers. Finally, the potentials of these devices and the challenges of realizing their applications as quintessential dosimeters are highlighted for future research and improvements.

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Synthesis and characterization of high‐sensitivity Dy,Eu co‐doped CaSO₄ thermoluminescent phosphor using coprecipitation technique

Mohamed,

Salama,

Alazab

et al. 2024

Luminescence

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In this work, (99 − x)CaSO4‐Dy2O3–xEu2O3, (where x = 0, 0.05, 0.1, 0.2, 0.3, 0.4, 0.5) thermoluminescence phosphors were prepared using a coprecipitation method. The thermoluminescence (TL) dosimetry (TLD) characteristics such as TL sensitivity, dose–response, minimum detectable dose, thermal fading, and the effect of sunlight on the prepared phosphors were investigated. The obtained results indicated that the most sensitive phosphor was obtained at x = 0.05. Large thermal fading of 6% after 1 h and 26% after 24 h from irradiation followed by 71% after 1 month with no additional fading was observed within a time frame exceeding 2 months throughout the remaining duration of the investigation, which also spanned over 2 months. Despite the phosphor's high fading rate, the relative sensitivity of the prepared samples was ~90% compared with TLD‐100. The marked effect of day sunlight was also determined. High dose–response within the low‐dose range from 0.01 to 5 Gy was observed. The obtained results suggested that the synthesized phosphor is well suited for applications involving radiation biology and radiotherapy dosimetry.

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Effect of heating rate on thermoluminescence output of LiF: Mg, Ti (TLD-100) in dosimetric applications

Cited by 26 publications

References 37 publications

Synthesis and characterisation of LiB ₃ O ₅ nanophosphor as a TL dosimeter

Synthesis and characterisation of LiB ₃ O ₅ nanophosphor as a TL dosimeter

A Review: Photonic Devices Used for Dosimetry in Medical Radiation

Synthesis and characterization of high‐sensitivity Dy,Eu co‐doped CaSO₄ thermoluminescent phosphor using coprecipitation technique

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Effect of heating rate on thermoluminescence output of LiF: Mg, Ti (TLD-100) in dosimetric applications

Cited by 26 publications

References 37 publications

Synthesis and characterisation of LiB 3 O 5 nanophosphor as a TL dosimeter

Synthesis and characterisation of LiB 3 O 5 nanophosphor as a TL dosimeter

A Review: Photonic Devices Used for Dosimetry in Medical Radiation

Synthesis and characterization of high‐sensitivity Dy,Eu co‐doped CaSO4 thermoluminescent phosphor using coprecipitation technique

Contact Info

Product

Resources

About

Synthesis and characterisation of LiB ₃ O ₅ nanophosphor as a TL dosimeter

Synthesis and characterisation of LiB ₃ O ₅ nanophosphor as a TL dosimeter

Synthesis and characterization of high‐sensitivity Dy,Eu co‐doped CaSO₄ thermoluminescent phosphor using coprecipitation technique